Nuclide Symbols: Atomic Number, Mass Number, Ions, and Isotopes

[@TitanTubs]

My teacher could never explain this as clearly as you. Thanks Dave

[@nanajunior7562]

me to

[@rinyeongi6322]

Same

[@fowziachowdhury8774]

I’m binge watching the entire series because I have a final test tomorrow. Thanks for such great review

[@ashleysmith3162]

Same!!

[@david2869]

I'm binge watching for fun! I haven't had a chemistry test in decades.

[@creatorhandle6213]

Thanks for such great review

[@aliciacohen5279]

Did you pass lol. I have one tomorrow and have no idea what’s going on

[@iranianintelligenceagency9337]

@@aliciacohen5279 How'd you do

[@thomasbrown6376]

I'm a chemistry teacher. Your use of graphics and your clear explanations are magical. Thank you!

[@NININAVlog]

Same here 😂

[@gandmsparklydaynight3993]

Impressive you explain better than my chemistry teacher!!

[@jamesgoulet2254]

G and M sparkly day night damn straight

[@zienzeng4983]

ME TOO

[@hamadgbk3190]

facts

[@wellox8856]

our teacher just sent us here sooo... yeah 🤷‍♀️

[@AlexeArt]

@@wellox8856 same

[@damienkern6446]

Bless KZbin educators. Poor kids would be lost without them

[@rayhanrani3857]

This guy is the GOAT!!! My mom asked me if I needed tuition for Chemistry: ME: I pull out my phone, swipe to youtube and show her Professor Dave :)

[@TheKids422]

same except for every Physics

[@eyesinmythroat4073]

and in a single evening you’ve summed up my semester of chemistry except now i can actually understand it. life is magical

[@unknownguy8232]

It's shockingly short and very well explained. Thanks Professer Dave

[@satyamchand444]

Blew my mind at first but after giving some time to this video , it proved to be very effective and useful. Thank you very much.

[@JackCodeKid]

Knowledge is free on KZbin lol

[@farhanahmed2508]

Nhật Tuấn that's good, isn't it? 😊

[@thegoodlydragon7452]

It amazes me that out of pure snobbery a lot of so-called "real educators" in the academy still snobbishly snub their noses at KZbin when KZbin actually often does a far better job educating people than they do. These chemistry videos are more informative and clear than A LOT of professors who drone on confusingly with their chicken scratch handwriting and a marker doodle or two. The clear graphics alone make it easier to follow, not to mention it's explained well. Many teachers are glorified educational KZbinrs, but with smaller audiences. It's like the professors are scribes at the dawn of the printing press, bitching about how vulgar it is that the words are stamped on the page rather than handwritten.

[@SangheiliSpecOp]

@@thegoodlydragon7452 youtube is amazing but because it's free, there are institutions out there that will doubt it's credibility so they can still charge for their programs, even though their curriculum may be no better than what is on here

[@killuazoldyck5864]

❤️

[@habibrahman9154]

KZbin isn't free😝

[@TheToxicMegacolon]

My first chemistry prof, thank you so much!

[@amandapager1435]

Thank you so much for this, my comprehensive test is a day after right now. I’m studying for 12 hours and this helped me so much. Thank you

[@balakumaran6056]

most powerful thing of your teaching style is let's check comprehension. comprehension makes concept as strong, thank you professor

[@thewildrobb]

I'm taking Prep General Chemistry this summer in a 4/5 week college class so in Fall I can take General Chem. I haven't done chemistry or math since HS and I was so scared but these videos are helping a ton! I actually didn't learn how to calculate all these things because we didn't have a chem teacher until like MARCH so we had to scrunch everything and really only learned about the periodic table and different types of mixtures.

[@spenhunter3592]

litterally subscribed fr

[@manyboy5642]

thx i usally don't comment on Videos but this helped me for my test so thx

[@ceylon4855]

Thank you so much! This really helped me better understand the charges with electrons/protons on the nuclide

[@motivationalspeeches125]

You are a life saver professor for me. I've been struggling with this throughout my academic journey but didn't find the right answer. 🙏🙏🙏

[@xBobz99]

Very concise summary of periodic table basics!

[@vintinoo1924]

Been watching all these videos and taking notes on your biology and chemistry vids ! i really enjoy expanding my knowledge and ive been absolutely fascinated with the origin of life. Hoping learning all this will help me understand more !!!

[@TheKids422]

Cover more topics, we're waiting, you are literally the smartest man in existence.💖

[@jxkson3358]

Professor you are just fab . Only you are the one who is able to clear all the concepts

[@justinpettit3432]

Did u understand how his lesson was supposed to help with his "checking comprehension" thing at the end? Because I don't. I'm confused.

[@mirlamurillo3473]

Hi, can you explain in each video how you got to your answers! Please. That would greatly help. Thank you for your videos.

[@ZeeshanMalik455wasup]

You explained this really well, thanks, I still need some help so I will try to watch some of your other videos

[@TreXsJournal-Coming-Soon]

The part that boggles me is: i.e., if 75 is the percent abundance of Cl 35, what is the point of 75 of 35. Wouldn't that be a percent of an individual atom? The math expression just seems so redundant to me. In my head (and I know this is not correct. The issue is I know how to do it correctly, but can't seem to computer the why), 75 percent should be multiplied by the total of a sample to predict how much of that samples mass belongs to Cl 35. Yet this is so obviously not what's going on.

[@shaan_Finland]

Best tutorial ever ❤

[@505-g6t]

I'm in year 8 and I want to study more complex things than what I am taking now, this was really helpful thanks.

[@Phoenix-pk3fx]

Aeventus this is me 7 years ago lols, I can relate

[@Lynn_l]

Goodluck with your GCE'S or u must be in college or sixth form

[@curlyhead20]

@@Lynn_l 11th grade😂😂

[@mxoeneod90]

@@curlyhead20 you are legend man me from hs

[@anushgudimetla6260]

We both are same. I am also in 8th. I am a version of you, but 6 years late.

[@chomaythan6633]

Thanks a lot. I am a visual learner. I really want to learn chemistry but textbooks are a bit complicated for me. It is also because I am not a native English speaker or learner. I do not need to spend one-hour reading textbook to understand. Your videos explain the simplest way to understand chemistry in such a short time. Thanks a lot Prof Dave.

[@ProfessorDaveExplains]

thanks for watching!

[@justinpettit3432]

Do you understand his "checking comprehension" part? Because I don't get how I'm supposed to figure that out with the given information of this video. Nothing in the video explains how to figure out those things.

[@yetanotherchannelonyoutube]

@@justinpettit3432 The video explained everything in the check comprehension. The only thing that you would need is a simple periodic table to find each element and its atomic number.

[@senorsnap9842]

Im doing hw at 11pm, and this helped a lot thank you for the spare knowledge kind sir.

[@roce6296]

your the best. I am starting to hate chemistry but you made it simple. thank you

[@Felishamois]

I keep gawping at the quality of this channel :)

[@nineofnine]

I nearly understood right up till the comprehension test...went over and over it but I guess I got a lot to learn lol

[@TheKids422]

very educational, i am highly appreciative

[@jordanjay1479]

He's literally better than all the teachers that I have and his education is free!!!!

[@NonsensicalReality]

This makes me see why I never remembered much in science. So much terminology to remember. I keep rewinding it to wrap my head around it all because when I'm watching it I go into the Dr who vortex after a few terms are used together haha

[@justinpettit3432]

Facts. I remember in my school days how I would look in the glossary of the science book to understand what the word meant and the definition was 30 other words that I didn't know what they meant. So I'd look up those and they had words I didn't know in their definitions too. Lol. So I'd do all that work and still have no idea what the words meant.

[@gallectee6032]

@Justin Pettit That's because they cannot explain these concepts well.

[@Charlies_Factory]

Actually an incredible video and I appreciate him not dragging it out. Wish he mentioned cation and anion but its a quick google from me lol

[@shivamchouhan5077]

Such a clear and fascinating explanation Thank You prof

[@danielholta5721]

Am i the only one looking up individual videos just to make sense of this video? This is a whole lot to grasp all at once.

[@justinpettit3432]

I thought I understood this video until he gets to "check comprehension" and I'm like "how the hell am I supposed to figure that out?

[@laurendartnell6326]

@@justinpettit3432 same! :-(

[@incarnatedideaaj1329]

Thanks for helping me, Chemistry was hard at school. Goddd!

[@strasbourgeois1]

I KNEW I wasn’t the only one struggling specifically on this. Thank you M. Dave.

[@Graywolf848484]

Thanks for the explanation, it really helped. :)

[@comedian2479]

Thank you for the explanation and post. 🖒

[@shukriabdi173]

thanks

[@colwem]

In the comprehension table, why do we put 4+ for tin but don’t put a x+/- for any other ions?

[@christiananderson9001]

There was a lot of information in this video felt like was getting confused then felt so accomplished after aceing the comprehension

[@sieusieu418]

always love your videos, very helpful. thank u, have a nice day

[@kackkiste]

4:20 How do i know how much of the mass number are protons and how much are electrons in the 4th row for example

[@Jahangeldiyeva]

Yeah that is the question

[@nana-o2x]

Nice Dave I can do my test now respect

[@QUARTZPH]

I got perfect with the activity

[@rambo3636]

4:22 I think you missed the 1+ at the top right of kalium(K) in the 4th row. The same goes for the 3+ on the iron(Fe) in the 5th row and the 1- on the chlorine(Cl) in the 6th row. It is a bit confusing, because on the tin(Sn) in the 3rd row you wrote 4+.

[@DEADKingakaDK]

they don't have to have charges. they're neutral that's all.

[@DEADKingakaDK]

@@zequojai neutral means they are balanced and have no charge. This is theoretical.

[@neleh2377]

@@DEADKingakaDK butiin the colomn "charge" they do have a charge!

[@spadesofhearts7714]

This is exactly what I was thinking

[@acesagayno]

@ram bo Thanks a lot! I was also confused because of it.

[@pragyasoni9757]

Can you please explain how you got the answers for Sn??

[@ElizabethMcDaniel-bi6bi]

This is great! Where can I find a table like this for my chemistry students to fill out?

[@abhishekajit7652]

thanks for explaining so effectively

[@fatallotion878]

I HEART chemistry!!

[@TheKids422]

Ions are different numbers of electrons, right?

[@DaraOgbonnaiye-hj6et]

​@@TheKids422 An ion can either be a positively charged or negatively charged atom. Protons are positively charged particles while electrons are negatively charged particles. If an atom has more protons than electrons, then it's positively charged. If it has more electrons than protons, then it's negatively charged.

[@dealysclashlab7688]

thanks bro

[@borttorbbq2556]

I learn something new I always wondered about why the atomic mass wasn't a whole number I never took a high school chemistry class so yeah. So far I've known most of this because I love science so I have been learning it over the years regardless. Figured I should probably take a look at an actual chemistry course type thing so I can have a bit better understanding in a more coherent way. One upside to being homeless is I have a lot of time on my hands so learning and refreshing one of my favorite subjects being science as a whole sounds good. But I'm sure as we go deeper I will start running into more that I don't know I've been teaching myself most of the basics but there's only so much you can do by self learning. And Dave makes amazing content so it works out

[@DaveGrean]

Just wondering: how do you connect to the internet while homeless?

[@adr5617]

This is the best explanation i ever had. However, i got a little confused with the placement of atomic number & mass when i did the comprehension check. Lol! for example uranium, since 238 was placed on upper left of nucleid symbol, then i thought it was the atomic number. anyway, i already figured it out afterwards, as long as i understood how to do it. Thank you so much Prof. Dave.

[@justincrap]

Great outline

[@harrisongoodloe2636]

thank you professor dave

[@arvin144penjoyer3]

The true saviour of chemistry

[@jumino4565]

I loved the Intro BTW the video was appreciatable.

[@yahiatutuncu7508]

I love you, Prof. Dave!

[@zack189909]

Excellent video! I dare you to go to the LHC and say "there aren't any fractions of a neutron after all." haha

[@shuwashuwa.soda_]

This was very helpful, thank you!

[@beckylei1197]

Than you so much professor 🌹

[@IceyJunior]

can you make 1 about chemical properties and physical properties ?

[@ProfessorDaveExplains]

+Icey Junior i mention those in the types of matter clip!

[@IceyJunior]

Alright thank you Prof. Dave !

[@ecoscopic7872]

I guess Cl 35 - K 19 and Fe26 need charge signs ( in the comprehension check table )

[@trieuhuyvan5020]

thank you so much!

[@hibanedha3697]

This is soooo cooool... That i ever had in ma chemistry knowledge

[@bigguns845]

can someone explain me the result of 112 Sn +4 how did you come up with the answer

[@jasmingarcia7966]

I would like to know the same… I looked at the periodic table but it doesn’t match to the answer…

[@jasonnelson9141]

​@@jasmingarcia7966How so?

[@mariofelipequevedolozano3659]

I'm sorry, in the case of potassium, how did you know that the number of protons was 19 or the number of neutrons was 20? I know the sum of these values has to be 39, but what allowed you to figure out one of them?

[@ProfessorDaveExplains]

Potassium by definition has 19 protons. Check the atomic number on the periodic table.

[@mariofelipequevedolozano3659]

@@ProfessorDaveExplains thanks for replying. Okay, but without actually looking at the periodic table, is there anyway to know one of the two numbers? I'd need another equation, right?

[@ProfessorDaveExplains]

There’s no equation, but yes without the table you wouldn’t know unless you’ve memorized it. But you’ll always have access to a table.

[@mariofelipequevedolozano3659]

@@ProfessorDaveExplains Thanks a lot, professor :). I was doing these exercises as if I was in an exam without a periodic table, but thinking about it, really doesn't make sense to do things that way if I already passed chemistry 1 and just want to remember a few things. Thanks a lot again!!

[@Palanivel-lo8ml]

Very nice and useful video

[@louieamistad4507]

Thank you

[@debbiezangina4982]

THANK YOU!!

[@Mol2412w3]

thx for the practice :D

[@mandiejonsen]

The mass number for Sn is 118 and the number of neutrons is 69. Your chart at 4:23 is wrong or my understanding is off. Can you explain please?

[@user-nc5wc7dh7l]

So is 'Nuclide' an umbrella term for isotopes, ions and elemental nucleus?

[@ProfessorDaveExplains]

pretty much!

[@Bwercs]

On the comprehension table how come the K, Fe, Cl aren't showing their charge for their nuclide symbol? But Sn is?

[@juijani4445]

Yeah, it's an error that he made. The Prof admits, that he wasn't quite careful and thorough back then as he's now.

[@themexicanmullet9708]

So to find electrons you do the opposite of the sign in front of the charge to the proton

[@carultch]

The net charge of the protons and electrons needs to add up to the net charge of the ion. Protons add charge, electrons subtract charge. Protons identify the element, while electron count is flexible. There generally tend to be certain ions that are more likely to form than others.

[@blainelanders2361]

Fast + No BS = I LEARNED SOMETHING!

[@talentmachava5022]

Love you😊your Chanelle is helpful ♥

[@admiralicecream3344]

Thanks this really helps!

[@Oscar-gx2yf]

you;re awesome man

[@ledouxgerald2333]

thanks Dave

[@Mr_magik]

Thanks 🙏

[@PETERBAKR]

In your review question, I get how you got all of the answers except the Mass for Sn, I have looked at several periodic tables and they say that Sn mass number =118 not 112 as you put into the answer table....I am missing something , can you explain how you arrived at mass number of 112, please.

[@ProfessorDaveExplains]

so the atomic masses on the periodic table are average atomic masses, every element has atoms of different mass, these are called isotopes. so like carbon's atomic mass is a little over 12 because it's the average of all the 12-C, 13-C, and 14-C that there are. watch this one more time!

[@jasmingarcia7966]

@@ProfessorDaveExplainsso how do you calculate it to get the answer? If you don’t mind me asking? Or do you have a video that teaches you a little more in depth?

[@oosha22]

Thanks:)

[@drugvilim]

My chemistry teacher didnt explain me that well an atom for two yers but Dave explained it in 5 minutes

[@ryanhightower6455]

Thank you dave!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@parkjongseong8015]

Thanks 👍🙏

[@mychaelpierce8049]

Awesome video. Thanks for sharing!

[@kimjungyun1195]

Professor Dave really explains #well

[@OurTutorRajanSir]

Is the word radical a proper synonyms for ion?

[@ProfessorDaveExplains]

nope! those are completely different species. i have tutorials on radicals in my organic chemistry series.

[@mahbubarahman6384]

This is great!

[@rlignacio8243]

hello prof dave how to get the numbers of neutron?

[@heet2099]

How can we calculate anything other than charge and mass number in case of Sn??

[@auzraerios8170]

how do you find the pen number ,hyphen notation ,nuclear symbol and pen with different eleme

[@ProfessorDaveExplains]

i'm not sure i understand the question

[@jokebird6479]

Should we not have written ‘1+’ for the nuclide symbol at the top left?

[@honeydip1031]

I don't understand the Carbon part on the chart at the end of the video

[@emily-le6tv]

Makes my test easier🙂

[@ferdinandkuhn6975]

At the comprehension table, the nuclide symbol in the forth row should be ³⁹K^+ due to the extra charge, I think...

[@thegoodlydragon7452]

Was how to calculate the # of electrons covered? I tried to deduce that in the checking comprehension part.

[@ProfessorDaveExplains]

what do you mean by "covered"?

[@thegoodlydragon7452]

@@ProfessorDaveExplains I mean in part of the video, I learned that neutrons can be calculated by atomic mass - # of protons (or atomic number). To fill in the part of the chart in the checking comprehension part, I was trying to figure out how to calculate an atom's # of electrons.

[@thegoodlydragon7452]

@@ProfessorDaveExplains By covered I just mean explained in the video. Like "in this video, we'll cover how to XYZ."

[@ProfessorDaveExplains]

oh i see, so a neutral atom will have the same number of electrons as it does protons, then if it has a formal charge you adjust from there!

[@OurTutorRajanSir]

Can sodium loose 2 electrons?

[@ProfessorDaveExplains]

yep! but the second ionization energy is much much bigger than the first, as it would have to lose noble gas electron configuration.