The Periodic Table: Atomic Radius, Ionization Energy, and Electronegativity

Why is the periodic table arranged the way it is? There are specific reasons, you know. Because of the way we organize the elements, there are special patterns that emerge. And you know how Professor Dave feels about patterns. He likes them.
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[@Elleohw]

when you have a chem midterm tomorrow so you pray to god for help and he sends you a link to jesus

[@ProfessorDaveExplains]

amen!

[@bunnysenpaimon6742]

I want to like this comment more than once lol

[@deantetro5650]

When you need a 60+ on the final to pass chemistry, allows rely on Jesus

[@cynthiabrogan9215]

Jada Lowery I’m no where near my mid term this is homework and I got lucky. Now I don’t need this unit. Thanks Science Jesus!

[@rejosneopaney9780]

Bruh preach . my midterm tmr

[@alexanderl7059]

I love how this video was uploaded over a year ago, but Professor Dave replies to almost all the questions. Shows great skill and dedication! 👍

[@ProfessorDaveExplains]

you know it!

[@imbatman4665]

Including this

[@heheheheheheheheh3391]

Wdym a year ago? This video was posted 6 years ago! And it's still helping many people after all these years

[@polygongaming8859]

​@@heheheheheheheheh3391 The original comment was uploaded 6 years ago, please learn to read.

[@jembobs]

@@polygongaming8859 bro shut up, don't point out like that, mind your own business goofball

[@JimmyGeniusEllis]

It is the hit before my big test and I’m studying and the same guy that helped me pass calculus last semester has chemistry tutorials as well! The profound genius that is professor Dave is unmatched.

[@PunmasterSTP]

How’d your test go?

[@JimmyGeniusEllis]

thanks for asking. I got a B in the class. i did good enough on the final to get a B in the class. I graduated with my associates degree with high honors. I had straight As until I took this chemistry course (I had never taken a chemistry course in my whole entire life yet i thought i should take a level 2 chemistry course like an idiot) so I was about to get a full scholarship to governors state university and i just graduated this may in computer science. I also was able to get a job right after my associate degree with a software development company. had i not had your videos my gpa would have been less than 3.8 and i wouldn't have got my full scholarship that lead to my bachelors.

[@PunmasterSTP]

@@JimmyGeniusEllis That's wonderful to hear that you got your scholarship, degree and job! Just to be clear, I'm not Professor Dave; I just like to check in with people who left comments long ago. I think it drives up engagement on videos, and it has also lead to some cool conversations, like ours!

[@JimmyGeniusEllis]

@@PunmasterSTP cool strat bro

[@jacobharris3002]

I also took general chemistry at my Community college. Mainly because my Engineering friend, that was competitive with me in my math classes, was taking it. I quickly came to regret that decision. I had to transfer to a lower intro version of the course because I felt overwhelmed in the first lecture and I just couldn't get interested because I felt like I was just memorizing stuff instead of learning anything. I ended up getting a B on it like you because I put more time in the classes I was actually interested in. It wasn't until I took Quantum Mechanics and I knew where stuff came from, on a more fundamental level, that I got interested in Chemistry. @@JimmyGeniusEllis

[@fratermunky4336]

You break things down simply, schools need to model classes this way. Excellent presentation sir.

[@eamoncrosby2368]

My 11 year old daughter thinks Your Dave Grohl of chemistry . You have help her no end with her studies she absolutely loves your channel Thank you 💖

[@izabela2810]

professor dave you are my god. you saved me from ap science. dave > everyone else. thanks king.

[@slendrmusic]

This guy got me into Cambridge

[@olivia_oneil]

Ok woah this was awesome. Taking my final in two hours and your videos have taught me more than my professor has the entire semester.

[@raddyvogue976]

Having a unit test tomorrow and this will make me get a high score! Thank you so much!

[@joshuachaimson7890]

Raddy Vogue you're Asian. You'll get a high score either way.

[@imbatman4665]

joshua Chaimson Lmao

[@grandevinicius2927]

you are a very wise and inteligent man, thank you

[@catherinekalunga9270]

Thank you for explaining to me, cause I was not getting anything in the lecture

[@emilysilk7621]

This is perfect! Totally gonna smash this chem test tomorrow!! 😃

[@mhx6437]

So how did it go?

[@bilgekorucu7523]

@@mhx6437 been 4 years nearly.....

[@mhx6437]

@@bilgekorucu7523 Ik

[@bhoop2003]

@@mhx6437 I am a bit curious as to how his test went tbh

[@labik6273]

my chemistry exam is after 4 or 5 hours and i just opened my book for the first time, after watching this video, it feels like ive been studying chemistry for years.

[@lhasaphosa3350]

thank you. this is much better than my class fr.

[@DiamondViral]

I was taught all this for 2 months in school... This dude explained in Less than 10 minutes and it was much cleaner

[@samantharamon1235]

I was confused with ionization energy’s relation to the size of the atomic radius but they way you explained it helped a ton!

[@BerylOdhiambo-p2x]

Thanks so much professor dave.. atleast I have understood

[@lukemiller8454]

Great video, packed with information.

[@rossfriedman6570]

I'm so glad you're here helping me I'm a new middle school teacher brushing up on material

[@omaral-asaad6407]

thanks professor this really helped

[@lassi8205]

Well im kinda a few years late in watching this but its teachers day today and ur videos are helping me feel less anxious about my chemistry mid term exams so thank u so much for making these. Happy teachers day!

[@damiansigala6686]

Dave I really wish we could form a everlasting relationship and hold hands while we watch the sunset.

[@chenko8374]

One of the best explanations i've ever had

[@ballans_UG]

Thanks Pro. Dave

[@allypally1225]

i've always been confused about trends! thank you!

[@lowiily]

Thank you so much my teacher l am SOMALI student ❤

[@phyllos7236]

thank you Jesus for helping me with my chem finals. hope I can pass ;-;

[@timothywalz3332]

you are the real mvp

[@zafroo5042]

Thanks now my all concepts of are clear about paradic table ❤️❤️❤️❤️👌

[@AryanRaj-ct3yt]

Sir you are amazing your way of teaching in excellent love from india 🇮🇳

[@Virals_n]

Hey Indians, if u r watching this then,,, I would say that he just look so similar to Ranbir Kapoor. 😅😅

[@lesliea.lolong155]

I love the checking comprehension part. Yay!

[@supbs5501]

So awesome.... first time understood this properly... thanks

[@chens4218]

Professor Dave, could you tell me one of the exceptions of electron affinity , i just a little bit confused about that point, thank you anyway! Your tutorials are excellent very clear and succinct.

[@mojache2309]

Very great explaination. Liked and subscribed!

[@amruthaayyappan5927]

Thank you so much!! Saved me from absolute confusion!

[@anpanmanhope3977]

Thank you so much Professor Dave ❤️ You're a life saver

[@liamtahaney713]

who else is watching exclusively for 0:08

[@haphuongnguyen3358]

This wasn't recommended to you. You searched "Chemistry Jesus"

[@muyogomi315]

My final term exams are in 3-4 months & I wanted to finish my syllabus before hand because I have a really bad habit of stressing out over the smallest of things. So I searched up "Periodic table" chapter explaination & this came up. Thank you so much for making this video 😭🫂💓

[@mustafa_ksl]

5:54 no it's chlorine , florine has the highest electronegativity.

[@Prochur_porte_hobe]

Yeah

[@josephineharner454]

Thank you, so simple and informative. Makes chemistry a lot less intimidating.

[@onyxxstarr]

Thanks so much Professor Dave!😁 Just what I needed to get this periodic trends

[@artemshak5607]

Thanks professor Dave, I'm learned chemistry and english☺

[@Princekrchauhan108]

Best video love from india ❤️❤️❤️

[@lukehu3208]

Helping a lot even after 6 years

[@ISpeakZ25]

Thanks a lot professor

[@bertaga41]

Trying to get my head round the concept of the elements. Is the basic idea that all matter is made from the same basic material ie collections of electrons,neutrons and protons and the only thing that changes what they actually are is the number of these components? I feel like it's a naive question but it would help my understanding a lot if you could put me right on this.

[@ProfessorDaveExplains]

yep that's right, protons specifically

[@bertaga41]

@@ProfessorDaveExplains Wow! In a way it makes all of the complexity of the universe seem very simple. I've always perceived it as the exact opposite!!

[@FreyaWolfy]

Dave mate you've saved my chemistry grade

[@زيادزايد-ه4خ]

Thank you so much doctor 🤍🤍✨

[@evelynkuchar2652]

LITERALLY I LOVE YOU saved my ass today i did decent on my test because of you *chefs kiss*

[@beccaalizo7990]

Evelyn kuchar hi i know this is random but i’m trying to find the most recent comments bc i am SO CONFUSED on one of the questions at the end w atomic radius and i don’t understand why Kr isn’t the one w the lowest atomic radius

[@judy9680]

long live professor dave. saving my ass in gen chem 1.

[@ptkidksh5420]

This video is really helpful video, he explains really easily!!!

[@arvindbharadwaj9574]

Knowledgeable

[@SarathKumar-vd9mg]

I am suganya thank you for your teaching I am very under stood

[@cek3800]

Excellent explanation!

[@quantum-link6379]

Thank you. My question is in the atomic model (Bhor's model) - it proposes the presence of protons, electrons and neutrons. the question is, is there a direct way of measuring electrons, protons and neutrons? are they physically existing or they are a model to describe measured effects or manifestations ( in other words, they don't have physical existence)?

[@acho8387]

Thank you, prof Dave!

[@zombachi3924]

Ranbir Kapoor 😀👍

[@hirvatrivedi3901]

Brooo I see ittt

[@ronelthomas4257]

Don’t worry when Jesus is here

[@mnjjnm3273]

Thank for making studying esay

[@lauren9004]

Thank you!

[@TheVividen]

Why does it say that Si is smaller than Kr? Si has an atomic radius of 111 pm, while Kr has an 88 pm radius. Was it a typo or is there something I'm not getting? It seems like it should go Cl, Kr, Si, Ca, K

[@7alooo_]

This was so helpful thank you🤍

[@limit.1554]

so informative

[@georgesadler7830]

Thank you for the video.

[@sitiainaimn]

thank you professor dave!

[@Kingslayer880]

This is better than my chem teacher telling me to figure it out

[@RaymondDay]

I guess you should have added that ones with more than six tables of electrons going around them can fly off and those electrons flying off is what causes radiation. One thing I learned from you video I guess a lot of magnet Force can tear off the electron from an atom. Right? Thank you. -Raymond Day

[@smithmeister]

What 'force' explains the 'desire' towards shell fullness though?

[@yeo1913]

Whenever I see you I always think of Isaac.

[@_JAY_SHREE_RAM_77]

i am learning this at class 9th!!!

[@walidrehawi4133]

SOOOOOO HELPFUL.thanks in advance 🥰

[@chemkhan8148]

What is the importance of atomic radius in chemistry?

[@ProfessorDaveExplains]

To know how big atoms are.

[@arepallinanditha4347]

thank you sir

[@rosafavela5491]

Really love your videos

[@nigamshilpagr8]

Thank you for the helpful video but can you pls expain the answers for the questions in the last

[@bluedonkey180]

Remember that ANions are larger, with more electrons and negative charges while Cations are smaller

[@md.sumonrahman485]

Thank you Sir Your explain was great 🥰

[@송승재-i6p]

Guy on youtube: has beard and long hair Everybody: JESUSJESUSJESUS

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Stfu it's actually funny

[@azysgaming8410]

Jesus sus

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Sus

[@OO27]

Pin me like Jesus please

[@raidm1838]

bruh

[@steffinatalie]

Thanks Professor Dave

[@mubarakbushra8309]

Thanks a lot

[@Rock_plasma999]

praying for anyone who saw this comment to get an above average score in their chemistry exam

[@johannaruth643]

❤

[@kailaogunsan4879]

Ameeen 🙌🙌🙌

[@gunjansharma9441]

I told a joke to the noble gases but they didn't react :(

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gunjan sharma I get it lol

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its react...

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Bahut faltu joke tha 😛

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😑😑😑

[@falineempresso3652]

Lolll

[@Marshmellokitten]

I was here in grade 11, I'm back here in first year uni. Thanks a lot, still

[@supersarah5673]

What are you studying?

[@kwekoweprince5077]

Same !!

[@nyankrunex9654]

I wanna be a computer engineer ffs, why do I need chem smh..

[@enriquesuarez7113]

@@nyankrunex9654 hahaha, r u serious? how do you think computers work? You need chemistry more than literally any other science

[@nyankrunex9654]

No stress But two Chem courses don’t look good

[@bhooibg8125]

when jesus teaches you chemistry ftw

[@mossmoss2019]

yo dawg omg, i thought the same 😱

[@bikelifejetlife4461]

no coisidence

[@kingdev321]

right lmao

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HAAHAHAHAH

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😂😂😂

[@kendahlgrant8208]

I just want to say thank you! My entire study group has been trying to interpret our professor for weeks now, our test was two days ago, and we learned our entire unit from your videos. We all got A's. We were all sitting around the tv watching your videos as everything just completely fell into place. We must have said, "Oh my god, it's so simple though!" every 3 minutes. Thank you so much! People don't hear that enough, so just to let you know, you are well appreciated.

[@awm9110]

3 hours of reading dry book and taking notes or...8 mins of concise teaching, thank you.

[@DxzaiKxnnie_Dxmigxrl_SheTheyXe]

6 years ago but no replies-- I don't think my algebra classes are working, that must be impossible-

[@anjaligupta1182]

ahhhhhhhhhhhhhh @@DxzaiKxnnie_Dxmigxrl_SheTheyXe

[@sangamkatuwal9437]

Exactly

[@Alice15210]

Books just make these things harder than they are 😂😂😂

[@bigboidelli]

May you be merciful upon my midterm tommorow Jesus

[@akmikki3251]

Dear Brother, a do you not consider it odd to consider a man your god? no offense intended?

[@SuperAsim99]

r/wooosh

[@akmikki3251]

@@SuperAsim99 i am aware how you as an athrist would consider this a "woosh" situation. I have my proof and you are to come and learn :)

[@luisishere987]

Ak Mikki I haven’t heard of an “athrist” but what’s your proof?

[@akmikki3251]

@@luisishere987 wow .. so petty

[@diluted_potato8774]

Thank you, you explained it so much better than my teacher.

[@Aqoonkororsi195]

thank you teacher for you helping

[@j.a.q4588]

that's true

[@veerannaveeru9861]

inkannadalangvage

[@cynthiabrogan9215]

VelstryoxDP I have to look this up for homework. This is why school isn’t actually important and doesn’t need this much funding.

[@hobbylos3962]

same hahahaha

[@mariamatobiloye3770]

The world is so much different now that I'm less confused

[@ollieollieoxenfree]

Amen

[@leskorerica]

absolutely!

[@nyankrunex9654]

It's always been the same..people used to try to manipulate nature, and they still do- just in different methods now.

[@chewinggum5550]

No world is so much different in 2020!

[@syedafaryal3883]

😂

[@skellybro2290]

Professor Dave for president 2020

[@ProfessorDaveExplains]

well, i actually will be president 2033-2041. you clearly haven't seen my clip, "a president for the future - professor dave!" you can view this by searching the title or finding the "just for fun" playlist on my homepage.

[@sydelle3941]

Skelly Bro I'll vote!

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Wait, is it gonna happen? I'm still down

[@felixleong61]

The opponent will be a flat-earther.

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If I was American, I would vote for him tbh

[@samanthaperez7429]

Thank god u exist I have no idea what's going on in chem class this helped a lot

[@coleen6581]

SAME THANK YOU HUHUHU

[@Thomas-we3ed]

It's funny how some guy on youtube can explain something better than a professor getting paid $70 000 a year. And in less time too!

[@ronelthomas4257]

Bro u look like Jesus tomorrow I have midterm

[@matthewb.6937]

POV: sitting here at 2:30am completely clueless for test tomorrow

[@dekyumz7678]

0:42 i see no difference

[@ruairifarrell4618]

When you haven’t studied anything and watch Jesus during lunch before exam. Thank you god.

[@manvi_rajput28]

U are from which country

[@ruairifarrell4618]

@@manvi_rajput28 why ask

[@manvi_rajput28]

Because of ur name your name is not indian thats why i asked

[@manvi_rajput28]

And if u are from another country then i want to know about level of question which are asked in exams.

[@ruairifarrell4618]

@@manvi_rajput28 I’m Irish

[@DaesungMars]

I really hate chemistry

[@ProfessorDaveExplains]

chemistry likes you!

[@DaesungMars]

Professor Dave Explains hahaha thank you :p that made me smile

[@faip7064]

I love your response!

[@diaverna]

Daesung Mars Daesung is so adorable and talented!!

[@mrsudarshan6249]

Look the video again and you realize it is just physics at level of atoms and particles.

[@coreywagner7]

Prof Dave is an OG. I've failed chemistry 3 times, but it is required for my major, even though I will never really use the material for my major... Dumb I know. I just haven't really cared in the past but now I'm near graduation and HAVE to pass. His videos help explain things more thoroughly as lecture hall material can move very rapidly. And most lecture hall profs could care less about the kids anyways... too many of em lol

[@ProfessorDaveExplains]

you can do it!

[@adrianodeodatoidrovo9517]

did you pass?

[@thedarklord829]

u pass?

[@zahraaa59676]

Did not failing more than once affect your score? I failed two subjects (in my foundation year nonetheless) and it wrecked my GPA

[@OMARZAKIALIRAQEY]

Thank you

[@bayatii]

Omar Zaki Vlogs لك ها ابو الوصخ

[@bayatii]

Omar Zaki Vlogs وجهك مالسكسي ليش تخربة بالكيمية

[@qais-]

you are very welcome, son

[@coolseasheep9401]

@The curse of Dimensionality Idk maybe to pass? What a dumbass