Manganese - Periodic Table of Videos

[@TheJonix55]

"And 5, if you're a mathematician, you will know is half of 10" This is some advanced math right here lol.

[@KajoFox]

Actually, if 0 doesn't exist, half of 10 is 5.5

[@WaltRBuck]

Haha I love when he gets so seriously sarcastic in a playful manner without barely cracking a smile.

[@baarni]

pipnina Not true....zero is not a factor so is not relevant.

[@KajoFox]

baarni Get 10 things, pick the middle one. 10 is an even number and there is no integer middle value when the value represents objects in a line.

[@baarni]

pipnina yes correct. Therefore you cannot halve the sixth item to create 5.5 otherwise you would only have 4.5 things in the second half of your division as you originally stated. Messed up hey...So to halve 10 items you can only have 2 groups of 5 with a divide in between....;-p You just contradicted your first statement

[@josephiroth89]

I like the phrasing of that... "Forgiven in the interest of science."

[@empiricalandinquirical2435]

It is a great line, and he's lucky. I'm usually punished in the name of science.

[@xnax1993]

Somebody should make a shirt out of that. Something along the lines of "Forgive me in the interest of science."

[@dijjit]

Josephiroth Nom nom babies.... "oh dont mind him... hes doing it for science".

[@RomanNumural9]

Josephiroth FOR SCIENCE!!!! It is like the Leroy Jenkens of the real world.

[@EtzEchad]

His parents might've forgiven him, but I bet his sister didn't.

[@pixelmaniac8534]

*"Brringht grreen."* at 7:15 Poliakoff's cover has been blown, he is definitely Scottish.

[@derkateramabend]

You think so? The name Martyn Poliakoff sounds rather slavic to me...

[@pixelmaniac8534]

derkateramabend Sir Martyn is of Russian descent, but I firmly believe that it's a cover.

[@pixelmaniac8534]

***** I happen to be from Sweden. The "grreen" sounded different and I just jumped to the first dialect I could think of when I wrote the comment. There's no real thought behind it.

[@AmisTheos]

Pixelmaniac I don't mean to hate on you like that Michael guy did but the prof's accent didn't change at all :') literally all he did was roll the R, also Scottish isn't a dialect it's an accent (semantics I know).

[@ronaldderooij1774]

+Pixelmaniac He is in fact a Russian spy, working for Putin.

[@HisnameisRich]

"and if you're a mathematician you'll know that half of 10 is exactly 5". The professor cracks me up :D

[@BornAgainCynic0086]

***** In the name of science, forgive him!

[@daedra40]

Jeff H And in the interest of science, he was forgiven.

[@tomahawkmissile241]

I bet you still remember it’s 5!! That’s why he did this to help you learn!!!!!

[@austinb797]

We had a joke in AP Chem back in high school about disguising a potassium permanganate solution as grape kool-aid by putting it in a pitcher in a refrigerator. A rule of thumb, we figured, is to never trust a chemist's fridge.

[@jethrojangles9541]

"Manganese is actually a much more interesting metal than you might think." ...I had no preconceptions

[@Drencromalicious]

The brown manganese dioxide spots can easily be removed with vitamin C. Just use apple juice, an orange or just a vitamin C tablets to reduce MnO2 to Mn2+ and flush it well.

[@maskedmarvyl4774]

Where were you when he was 15??

[@vectoredthrust5214]

I wish I had the "Forgiven in the interests of science" excuse when I was younger.

[@natefizzle8675]

I am from the U.S. and i absolutely love your videos! I had always had an interest in Chemistry as a kid and these videos spark that interest alive again! Thank you guys for all that you do for science! P.S. Sir Martyn, I love your hair m8!

[@ShiroKage009]

"Used a spoon and a gas stove." This is a syringe away from being very dangerous.

[@sydhenderson6753]

Especially to items of clothes,

[@KingValorian1]

Brady I liked those types of videos since I first noticed your channels, but man, you have really stepped up with PeriodicVideos. It is so professional and detailed now, you just have to love it! :D Thanks for making all of these fascinating videos!

[@frankium264]

Manganese is one of my personal favorite transition metals. It has many different colored salts, the colors can be easily changed through redox. Its oxides are strong enough oxidants to generate halogens (primarily what I use them for). KMnO4 makes spectacular pyrotechnic reactions with reducing agents as well. KMnO4 can also be converted to Mn2O7 with sulfuric acid. I've done so before and it is so reactive that it instantly ignites/detonates substances such as alcohols on contact.

[@periodicvideos]

A Reddit discussion thread for this video: redd.it/2yhmrv

[@mdome8584]

Make a video on Caesium Hydroxide! The strongest base.

[@ravenlord4]

It's a pity that you have gone to the dark side by using reddit, the cancer of KZbin and life in general. (tips fedora and unsubs)

[@tyepowers5536]

raven lord How thick can a person get?

[@MangoesXx]

zoey Quay He tipped his fedora. That already speaks to what kind of person he is.

[@alexproshkin7892]

uploaded on my birthday! :)

[@Sebastian-oo7xi]

The beginning of the video was not properly accompanied by sound, so I went back 10 seconds. Now I am stuck giggling and having fun, hearing him pronouncing "manganese!" in such a passionate way, over and over again 😂

[@siyacer]

I don't have to watch the animese because I read the manganese.

[@redtails]

your proteins are a polymer of anime acids

[@SirJeff]

redtails excess anime acids are deanimated in the liver

[@michakrzyzanowski8554]

japanese manganese

[@danielbaird6662]

Ah, I see you are a fellow manganese of culture.

[@mr.n0ne]

I wish, i had The Professor as my teacher in the college, i would have Earned a gold medal. His explanations are always easy to understand. Simple.

[@cylurian]

Magnetic salts... wow! Never knew that. Chemistry is so amazing!

[@lizard5678]

Where I grew up you could buy potassium permanganate crystals in the pharmacy without a prescription, to make light pink disinfecting wound washing rinses (weaker than bleach, you also could get tincture or iodine), but we as 9 year old kids would buy a packet of like 1 gram, and use the crystals to create artificial sneezes. You pick out a crystal and stick it in your nose, and it's an instant sneeze. I only did it like twice in my life, but some of my friends found it so interesting that they did it over and over and over and I'm like dude, you're messing up your mucuous lining like that, and creating permanent damage or something. Crazy! We also used to shave match heads into a loud noise making device, made of two male screws screwed into a female one from the opposite side, and a piece of shopping bag tied around the end of one of them, which, when you throw it up in the air, becomes the tail as the screw contraption falls down, guaranteeing that it will hit the cement sidewalk tip first. So you unscrew one of the male screws, and shave some match heads into the chamber between the two screws, then screw it back on fairly tight, and throw it up in the air so when it lands it hits the cement floor. Booom! Fun, fun fun! We also stole calcium carbide from the welding generators at the nearby construction site, and put it in a wine bottle the alcoholic construction workers left empty around the construction site, with a cork, so you fill it with water, drop a piece of grey-brown carbide covered with white lime, and plug the cork, and 30 seconds later pop! it shoots it up into the air. I'm thinking H2O2 with a drop of MnO2 catalyst into it would also do it, unfortunately the reaction rate is too uncontrolled between MnO2 and H2O2, unless you use a small piece. MnO2 is also a great O2 generator catalyst when trying to get O2 out of KClO3 or KClO4, which, when heated, have a high decomposition temperature, or KClO3 actually turns into KClO4 without decomposition, but in the presence of a little MnO2 it comes out fast. MnO2 like PbO2 is also a great Cl2 generator from HCl, maybe from bleach too, and I think I read somewhere that cobalt gives you O2 from bleach while manganese and lead give Cl2. PbCl4 might exist at some low temperature and decomposes at something like 5C, I'd have to look it up, like chlorine hydrate is also stable at low temp. I don't know about MnCl4 if it's ever stable, but Mn2O7 exists for sure, and it's wild.

[@nessunodorme3888]

Thanks for all these tips!

[@SirJeff]

Here I can get 100g of KMnO4 crystals over the counter for $10. Then I chuck some of it into glycerol from the baking store and watch the show

[@NavyField123]

A year ago I did some different experiment that also led to Potasiummanganate. Whats intresting about K2MnO4 is that it gets oxidizied to KMnO4 very quickly while in contact with air (or oxidants) but can be stabilized as cristal water in KOH or NaOH that is used for the reaction.

[@brambo34]

"Forgiven in the interests of science" a phrase I wish I heard more often

[@ryanbobyan]

I love the roll on the r in “bright green”

[@SidCurry]

Periodic Videos, I've been a long time subscriber, I love Professor Poliakoff! It's partly thanks to you that I started making my own science videos (in fact I uploaded my first videos only last week!) in the hopes that I can help more people become interested in learning about Science. And if anyone here is interested in watching other science-based videos, please give my channel a try! I strive to make my videos as visually appealing as possible, and as a grad student who is trying to put himself through school while also supporting his parents, your support and viewership would be much appreciated! Thank you guys :D

[@insanomonkey]

i was gonna skip past this comment cause it sounded like spam, but i actually looked at your videos and i love your intros

[@MultiElementalgamer]

*sir, not professor. He was awarded the title quite a while ago

[@SidCurry]

Greg Addams I know, but he had said himself that he prefers to be called professor by students :)

[@ToniT800]

ScienceSid As advice, you could make the intro into your video a bit shorter(or remove it completely), and stop using CAPS IN YOUR TITLES TO DRAG ATTENTION=)

[@k.c.lejeune6613]

As a man trained in wilderness survival, I've learned a way to start a fire by combining potassium permangenate and glycerin, unique energetic reaction highly useful in getting a fire going. Always keep both in my survival backpack.

[@anthonymccarthy4164]

I don't think enough people have commented on all of the wonderful accents on these videos, beautifully varied.

[@ichbindarren]

1:35 this is why we love the professor!

[@texasdeeslinglead2401]

"5 if your a mathematician, is half of 10". HAHAHA!!

[@jwt242]

Great shots getting the different varieties of Mn dissolving in the liquids; those were truly terrific. You don't have to rack (DOF) focus in each video. It seems that you always make a point to do so.

[@8platypus]

i love how you wave your arms in the beginning, it gives you all the credibility in the world as a scientist in my opinion.

[@bxyify]

Put it KMnO4 on Magnesium and add a drip of Glycerin on it... *woshh* and then its snowing white particles (of Magnesiumoxide). That was the first experiment I did as a kid with my chemical model kit in my mom's kitchen. However I didn't leave brown spots either...

[@rediempti]

So happy to see fresh element video :))

[@maqpi8335]

It has 5 d electrons in element form too so why isn't it magnetic in element form

[@stuartwhite8074]

Hi, great video. I'm surprised the reaction of permanganate and glycerine wasn't mentioned. Reduce the permanganate crystals to a powder with a pestle and mortar and arrange in a pile (like a small hill). Drip some glycerine on top and it should start to catch fire, looking like a volcano! The permanganate is a powerful oxidant and the glycerine is the fuel.

[@snarky_user]

During WWII, the United States removed the nickel from the alloy used in it's five-cent "nickel" coins (Cu75/Ni25) to, supposedly, divert it to arms production. They replaced it with silver and manganese (Cu56/Ag35/Mn9). As an indicator of the alloy change, the placed very large mintmarks above Monticello (Thomas Jefferson's home) pictured on the reverse. The color of the alloy is strikingly different to anyone familiar with coins. It is speculated that the true reason for the change was public relations - demonstrating reallocation of resources for the war effort - in an attempt to encourage scrap collection, etc.

[@CrunchChicken]

You guys should do a follow up video on electrons and their states and orbitals. I think it might help the understanding of transition metals and why they're so special.

[@mathieuschuler366]

Thank you guys! I am in the 8th grade and we are just starting to learn about the elements! These videos really help me understand the material.

[@mathieuschuler366]

@Комендант Sixto goddannnggg thanks for replyin!

[@EatIt2000]

I love the very beginning of this video where hes shaking his hands "manganese" I dont know why but its kinda funny

[@wread42]

I was just about to post exactly that comment.

[@tobiaschristensen3752]

I love how he always persuades people to do experiments.

[@dustinbreakey4707]

Can't get enough of these videos.

[@darylcheshire1618]

In a standard D battery there is a copper electrode surrounded by manganese dioxide soaked in ammonium chloride solution. I used to mix this manganese dioxide with aluminium powder and obtained a thermite reaction but didn’t see any manganese. I suspect it burned in the heat of the reaction. Later I read this MnO2 mixture with aluminium could be explosive so I didn’t do it again. It wasn’t randomly thrown together, it was in stoichiometric proportions and even small quantities could be ignited with a blowtorch.

[@anchorbait6662]

7:15 "Brrrrrright green"

[@AinaweeUAE]

Manganese is not strictly in the middle of the transition metals, but it is one of the 2 yes, the other being Iron (as would be seen by a mathematician or more specifically a statistician). Idk why Manganese is more special than Iron, I am guessing it has got something to do with the half filled d-orbitals. Mn has all its d-orbitals half filled, but iron has one filled d-orbital.

[@RickMason-yj7pv]

Manganese is the central atom of chlorophyll. Iron has that position in haemoglobin. Almost identical molecules other than the central atom make normal blood and plant 'blood'.

[@Дмитрий_1981]

Not every scientist can boast of such a sense of humor and the ability to create a positive attitude :)

[@mateoduff8915]

how the hell did he get his hands on this as a school boy even in the interests of science

[@joshuarosen6242]

I played with it when I was at school as well and I'm not as old as the Professor. Perhaps schools in England are more relaxed about this.

[@Kizron_Kizronson]

He probably bought it from his local chemist. Gotta remember that chemists weren't always just the place you went to to get medicine. Even today you can get all sorts of stuff from a proper chemist store.

[@Tindometari]

It was a different time. People didn't keep their kids wrapped in Nerf in those days.

[@gbear1005]

3:04 white is a technically all colors.. so salts have narrowly defined colors in full frequency light.

[@nihilumaeternum6555]

0:27 As far as I know, zinc is not a transition metal since its d sub-level is completely full.

[@aaroncapricorn5867]

I enjoy looking into so many minerals in relation to the human body's utilization of such minerals. Eat your manganese (containing foods). (MANY foods contain manganese)

[@padhlebhaiwithai]

Zn is not transition element as its 3d is fullfilled ,yes it is d block element but not transition element

[@jamez6398]

Manganese: one of the best elements ever.

[@ToniT800]

Hm, i don't get it. If metallic Mn has 5 d-electrons , which are unpaired, it should be also magnetic as metal. Or do i miss something?

[@omsingharjit]

3:10 unbelievable really . But how ?

[@ダスティンライリー]

Potassium permanganate is also used to make water safe to drink, so it's pretty and useful!

[@thetruthmustbetold6999]

The ryme is if its pink its safe to drink

[@HolzMichel]

pretty wild how manganese can change its colors, when out prospecting the purple color is usually an indicator of the presence of manganese.. this has to be one of the more interesting video series in youtube!

[@avishai7830]

One of my favourite minerals is rhodochrosite (and rhodonite), and both are gorgeous pink! I should mention they're both manganese carbonate (if I remember correctly). I'd love to see the professor with a sample of rhodochrosite from Sweet Home Mine, Colorado

[@barry7608]

That’s extremely interesting, magnetic salts!! Are there more and has anything come of it

[@PhazonSouffle]

It's interesting how the colours of the two compounds are on opposite sides of the colour wheel. Is thee any significance to that?

[@wedmunds]

PhazonSouffle Just molecular crystal shapes, nothing more.

[@LardGreystoke]

And karma.

[@CrispyDruid]

"Forgiven in the interest of Science". What a great line. =3

[@TomMalufe]

Yay! New video! I've been wondering when we would get another :)

[@Henchman_Holding_Wrench]

All through middle school, "Manganese" always sounded like some exotic nationality to me.

[@ElLeon7x7]

This was a much more interesting video than I thought going in. Thanks!

[@Gorpinster]

So did Neil find out or get angry about the manganese bottle?

[@dumbo800]

Something tells me he won't be forgiven in the interest of science this time...

[@PeterWalkerHP16c]

When I was a kid 50 years ago, dentists used potassium permanganate solution as a mouthwash/rinse.

[@tobywenman4769]

I remember using potassium manganate for showing convection currents in water

[@RandomMan-nv2qh]

And diffusion in water lol

[@mofire5674]

"I persuaded Sam"....wait that's not Neil.

[@calebkirshenbaum6839]

Did anyone else notice the weird noise at 4:34 (rewind a few seconds so that you can hear it). I think it sounds like a zippo lighter

[@Omapk]

So if you dye a shirt with the green stuff and then squeeze a lemon on them will they turn bright purple?

[@bent5732]

You're telling me the guy who named this element wasn't just a huge death note fan?

[@InterficioPupillus]

"forgiven in the interest of science." Love that phrase

[@thebestofall007]

will magnesium in any way react with manganese?

[@BamaFanEdge]

While on the topic of the transition metals, can someone explain why iron, cobalt and nickel are in the same electron group?

[@easychemistry4405]

Why Metallic manganese was not attracted by mangenet? As it has 5 unpaired electrons in d orbital. It should be paramagnetic in nature.

[@klangfarbe6293]

Best comment ever: I was forgiven for the purpose of science"

[@ScrewCrafty]

Can someone explain to me what is happening in the reaction of Manganese Dioxide and Hydrogen Peroxide? I have done it (and recommend that others do too - you can get Manganese Dioxide out of lantern batteries along with carbon rods) and cannot find a definitive answer as to why the reaction happens.

[@Rosie6857]

The effect of the MnO2 is purely catalytic. It causes the decomposition of the peroxide into water and oxygen. I've done it at home, too, about 60 years ago. I've used MnO (starting as MnCO3) as a catalyst in a reaction between acetic acid and decanoic acid to form methyl nonyl ketone, which smells quite nice. This was perfume chemistry.

[@Cychr]

I thought that Scandium and Zinc weren't considered to be transition metals, only d-block elements, because they don't form ions with an incomplete d sub-shell?

[@locouk]

As I'm no mathematician, I've learned something today. 5⃣ Today we'll be learning about the number 5⃣. 12345⃣678910. Ahhh.. Sesame St.. Those were the days!

[@matthewspence7476]

Manganese: the element that is misread as magnesium

[@MichaelGedies]

Whern the KMnO_4 was put into the solution, the purple crystals fell leaving a trail of prefectly spaced bubbles on the slow motion footage.You can clearly see their frequency, what is causing this frequency instead of a solid stream? I know that if you want to be technical, it will never be a solid stream because they are molecules but the fact that they are released in little bubble bursts at a specific rate just boggles my mind right now. So interesting, but would someone care to explain this? Maybe some theories? I'm super curious :3

[@the_disabled_gamer2832]

***** Can you please do an in depth video on Thorium, I am studying Thorium as a stable reactor replacement over Uranium Reactors or more over the Thorium reactors in question are called LFTR and it's quite remarkable and even so because of the fact that it can use spent nuclear energy rods and waste as fuel etc etc etc and i think allot of people that follow this channel would love to learn about this, especially the fact that in a LFTR reactor there is 0 risk of a reactor meltdown in a Thorium reactor, just a suggestion.

[@JmanNo42]

Can you make a magnetic solution in water?

[@rogerlee216]

I love manganese chemistry. I was hooked the first time I saw KMnO4 in water.

[@tommunyon2874]

My friend and I tried to make a firework incorporating potassium permanganate, thinking that we would get purple sparks. It was just a kid's chemistry set from "Toys by Roy" so we failed to get what we expected.

[@RandomExperiments]

I like the fact, that the salts are magnetic. I didn't know that before, so I had to test it by myself. Luckily, I had manganese metal, manganese sulfate and a magnet here :) Really nice!

[@Tangobaldy]

Years back when you could buy chemicals without being suspected of being a terrorist, i purchased potassium permanganate. Dropped about 500 grammes off powder on my kitchen floor. Thought it be a good idea to mop it up. My wife was fuming as it looked like someone had done a dirty protest on our new floor.

[@amitnadig2884]

Can we make a potassium permanganate crystals by normal crystallization??

[@tarquin8963]

What is meant by "KMnO4 has no D elctrons"? A link would suffice if it is to complicated to explain in a comment. Thank you.

[@wolftruong2413]

I must disagree with the professor on one thing here. Zinc is technically not a transition metal; it's ground state atom contains a completely filled d subshell and its 2+ oxidation state (virtually the only oxidation state in which it exists) involves the loss of only the 4s electrons. Zinc also typically forms diamagnetic, colourless compounds, in contrast to those of the transition metals which are paramagnetic and coloured.

[@calebd2513]

Wolf Truong Scandium isn't either - it forms 3+ ions which results in loss of the 4s and 3d electrons

[@tapeteavoador]

"Which is BRRRRRRIGHT green". That must be really really bright!

[@brilliantbrunch]

Zinc isn't a transition metal? A2 chemistry course in the transition metals module excludes Zinc from transition metals. Am I right? Or just misinformed?

[@Eevee13-xo]

These videos make me want to be a chemistry student so i can play with them

[@Backyardmech1]

This stuff is fun to play with when you’re mixing 30 pounds at a time into dilution with water for groundwater remediation. No matter how clean and careful you try to be there will always be a purple mess or brown stain.

[@GronTheMighty]

Here is the instant-cure if you don't already appreciate manganese; 1: start the video. 2: press 0. 3: repeat until you appreciate manganese, or until you feel like you absolutely must watch the rest of the video.

[@Tephr1te]

isn't the transition metals excluding scandium and zinc, because they have to have incomplete d orbitals, or are there different definitions?

[@ted_b]

I thought so. A transition element is one that forms one or more ions with incomplete d-orbitals.

[@swolby9230]

I have researched KMnO4's acidity, and it turned purple in water. It seems as if it is not acidic at all.

[@rajeshshahi1000]

Brrrigt green LOL :D

[@thepatriot19]

where did he get everything when he was that young?

[@BobSmith-s7j]

There was a permanganate dealer on every corner in early 1960s Britain. They soon turned to more lucrative and fasionable LSD. Crack came later.

[@Tangobaldy]

Half of ten is five. Count out ten lemons and divide by two. Five each pile.

[@tomahawkmissile241]

Keep up the great work and hope all is well

[@tomahawkmissile241]

I will take payment of gold in solution up to 32 oz or 1 giant flask of helium worth upwards of 20,000.

[@lpcthug]

what about the effect of manganese on the human body???

[@fano72]

Really weird that mnso4 is magnitic salt! Just like magnetic oxides. But i wonder if the solution of mnso4 in water could be magnetic, can you answer the question?

[@MrLittlelawyer]

Last year I set up an amateur chemistry lab in the shed in our backyard. It was lots of fun, throughout the spring and summer, but when I was setting it up and buying lab equipment I had one definite question. What chemicals should I buy? I knew I could get many impure chemicals from other sources (H2SO4 from drain cleaner for example). I still wanted some chemicals of lab grade quality, and along with various other things I decided upon I also bought a small amount of KMnO4. I didn't think much of it except "This looks like an interesting oxidizer, I wonder what I could do with it?". After using a very small amount of it in an experiment, I was satisfied that I had bought it, and put it back where it belonged. At this point I saw it as a dark near black color. Then the next day, I accidentally spilled a bit of water on my lab table. On the table was a note with some experimental information on it. At first I was a bit upset that my notes had been soaks, and then I noticed those bright purple dots all over the paper. Stopping my current experiment and completely ignoring the fact that my notes were soaked, I began laying out more pieces of wet paper on the table, and noticed more and more purple spots. After some searching to find out which chemical it was that had caused this (I hadn't recalled spilling anything after all), I finally found out, and was honestly quite glad. Normally, I don't care so much about the color changes in chemical reactions (they don't interest me), but I found this purple color quite amazing. Potassium is probably my favorite element (for color, re-activity such), and I already like oxygen, so KMnO4 suddenly became on of my favorite molecules. Later, the brown spots did show up, and I sympathize with the Prof's situation on that. Its amazing how such small particles of dust can show up so well as purple and then brown. You wouldn't know you've lost some, and then the next thing you know its showing pretty obviously!

[@austinbakanec4952]

Ok bro, you were probably cooking meth or LSD, lol. Jokes

[@omsingharjit]

8:28 i am very poor in maths but i am happy because someone called me Mathematician . Lol😂