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

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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.
Watch the whole General Chemistry playlist: bit.ly/ProfDaveGenChem
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EMAIL► ProfessorDaveExplains@gmail.com
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Опубликовано:

2 сен 2015

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Комментарии : 2,1 тыс.

@Elleohw 7 лет назад

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

@ProfessorDaveExplains 7 лет назад

amen!

@bunnysenpaimon6742 6 лет назад

I want to like this comment more than once lol

@deantetro5650 6 лет назад

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

@cynthiabrogan9215 5 лет назад

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 5 лет назад

Bruh preach . my midterm tmr

@Marshmellokitten 6 лет назад

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

@supersarah5673 5 лет назад

What are you studying?

@kwekoweprince5077 5 лет назад

Same !!

@nyankrunex9654 4 года назад

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

@enriquesuarez7113 4 года назад

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

@nyankrunex9654 4 года назад

No stress But two Chem courses don’t look good

@kendahlgrant8208 2 года назад

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.

@user-xp4uz6mf4u 3 года назад

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

@deadchannel5933 3 года назад

Stfu it's actually funny

@azysgaming8410 3 года назад

Jesus sus

@protagonist70 3 месяца назад

Sus

@awm9110 7 лет назад

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

@CocoLoco878 7 месяцев назад

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

@anjaligupta1182 6 месяцев назад

ahhhhhhhhhhhhhh @@CocoLoco878

@sangamkatuwal9437 4 месяца назад

Exactly

@Alice15210 10 дней назад

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

@diluted_potato8774 7 лет назад

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

@Aqoonkororsi195 6 лет назад

thank you teacher for you helping

@j.a.q4588 6 лет назад

that's true

@veerannaveeru9861 6 лет назад

inkannadalangvage

@cynthiabrogan9215 5 лет назад

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 5 лет назад

same hahahaha

@JimmyGeniusEllis 5 лет назад

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 2 года назад

How’d your test go?

@JimmyGeniusEllis 2 года назад

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 2 года назад

@@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 2 года назад

@@PunmasterSTP cool strat bro

@jacobharris3002 4 месяца назад

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

@JohnSmith0909 2 года назад

Why can't teachers be like you and not overcomplicate it. Thank you sm Professor Dave Explains

@alexanderl7059 7 лет назад

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 7 лет назад

you know it!

@imbatman4665 6 лет назад

Including this

@heheheheheheheheh3391 Год назад

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

@polygongaming8859 Год назад

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

@jeromsworld5534 Год назад

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

@samanthaperez7429 7 лет назад

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

@coleen6581 7 лет назад

SAME THANK YOU HUHUHU

@Thomas-we3ed 6 лет назад

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!

@oliviapoliti6665 4 года назад

I was studying for my first Gen Chem exam and was so confused about IE and EA but you made it so clear- thank you!

@000peachy 6 месяцев назад

Professor Dave you're going to get me through finals this week, love your videos!

@gunjansharma9441 6 лет назад

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

@eschell4564 6 лет назад

gunjan sharma I get it lol

@wesleyayala7120 5 лет назад

its react...

@priyaalrachh4288 5 лет назад

Bahut faltu joke tha 😛

@dhruvjawere7885 5 лет назад

😑😑😑

@falineempresso3652 5 лет назад

Lolll

@coreywagner7 7 лет назад

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 7 лет назад

you can do it!

@adrianodeodatoidrovo9517 Год назад

did you pass?

@thedarklord829 11 месяцев назад

u pass?

@zahraaa59676 10 месяцев назад

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

@lily2341 4 года назад

thank you for making education and knowledge accessible for students all around the world! you have helped over a million students feel more confident in chem tests, and you are excellent at explaining complicated textbook terms!!

@Witcaped 3 года назад

I like the fact that this video was uploaded 4 years ago and he still replies to all the questions, great determination. Keep it up.

@7Tord 6 месяцев назад

8 years now

@mariamatobiloye3770 7 лет назад

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

@ollieollieoxenfree 7 лет назад

Amen

@leskorerica 5 лет назад

absolutely!

@nyankrunex9654 4 года назад

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

@chewinggum5550 3 года назад

No world is so much different in 2020!

@syedafaryal3883 3 года назад

😂

@skellybro2290 7 лет назад

Professor Dave for president 2020

@ProfessorDaveExplains 7 лет назад

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 7 лет назад

Skelly Bro I'll vote!

@zoekelly8413 4 года назад

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

@felixleong61 3 года назад

The opponent will be a flat-earther.

@jessefaden3379 3 года назад

If I was American, I would vote for him tbh

@fratermunky4336 6 месяцев назад

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

@tahasilat7394 3 года назад

One of the best youtube vids on this topic! You summarized pretty much everything there is to know in less than 8 mins

@OMARZAKIALIRAQEY 7 лет назад

Thank you

@bayatii 6 лет назад

Omar Zaki Vlogs لك ها ابو الوصخ

@bayatii 6 лет назад

Omar Zaki Vlogs وجهك مالسكسي ليش تخربة بالكيمية

@qais- 3 года назад

you are very welcome, son

@coolseasheep9401 3 года назад

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

@bigboidelli 7 лет назад

May you be merciful upon my midterm tommorow Jesus

@akmikki3251 5 лет назад

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

@SuperAsim99 5 лет назад

r/wooosh

@akmikki3251 5 лет назад

@@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 5 лет назад

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

@akmikki3251 5 лет назад

@@luisishere987 wow .. so petty

@abbyyycm2611 4 года назад

I’m taking chem honors this year as a sophomore and I have no idea what’s happening. Thank you so much

@PunmasterSTP 2 года назад

How did chem go?

@lydiautomwen 2 года назад

yeah how did it go? hope u passed!

@kiyaodekirk8744 2 года назад

Bro same. I'm taking AP chem this year as a sophomore and I've never taken a chem class.

@PunmasterSTP 2 года назад

@@kiyaodekirk8744 Let us know how it goes. Btw I tutor chem and if you ever have a question, hit me up via a comment…

@tiribhogbe 2 года назад

@@PunmasterSTP hey! (Im also a sophomore taking honors chem) and I have a good deal of questions. Do you know how I could contact you about my questions?

@cherryfayloga1388 4 года назад

i've been studying for my Licensure Examination for Teachers and your lectures are a big help to me! THANK YOU!

@andrewkemp6722 7 лет назад

You sir, have just earned yourself a subscriber

@chamathdesilva8481 5 лет назад

And another

@survivingsociety8592 4 года назад

And another

@Venommm108 4 года назад

and another

@shawnpuri1829 4 года назад

and another

@mxnns0 4 года назад

And another

@bhooibg8125 7 лет назад

when jesus teaches you chemistry ftw

@mossmoss2019 7 лет назад

yo dawg omg, i thought the same 😱

@bikelifejetlife4461 7 лет назад

no coisidence

@kingdev321 7 лет назад

right lmao

@bladesofsaint1750 7 лет назад

HAAHAHAHAH

@neonikat827 7 лет назад

😂😂😂

@xmc1234 2 года назад

Professir Dave. You have helped me soooo much. Ive seen sooo many of your videos. Ive been studying for the MCAT for 2 months. Ive seen your videos on physics and chem and you have saved my life. Thank you.

@alliemoore5704 2 года назад

Watched this for my Chem class a year ago, and rewatching it now to study for my TEAS/HESI nursing exams. Hands down my favorite chem teacher is Professor Dave

@rodlebon 7 лет назад

Very good Professor Dave. The short animated images on the video really helps to make those harsh chemistry concepts easier to be figured out. Congratulations!

@Glasichor 7 лет назад

There are alot of great chemistry videos on youtube, but I think these are definetly the best. Clearly stated with clean visualizations and a good pace. Thank you so much for helping me! Your hard work shows!

@ProfessorDaveExplains 7 лет назад

thanks for the kind words!

@abhiramsharma7464 6 лет назад

Professor Dave Explains you are damn awesome

@user-vw6ez7rn5z Год назад

I was having trouble understanding ionization energy, and after this video I understood it completely. Thank you and keep making more amazing content!

@RagadHSaleh 4 года назад

your explanation is easy and smooth, thanks a lot! So I recommended these videos to my students in chemistry.

@rachaelwagner6502 7 лет назад

I just wanted to let you know, you just saved me from failing my chemistry test tomorrow. Thank you for this amazing video!

@aditibisht22 5 лет назад

@@RadheKrishna-sx2zu i can bet you're an indian. India ki izaat khrab ki v h.

@PunmasterSTP 2 года назад

How did the test go?

@DC-np5kf 2 года назад

@@PunmasterSTP lmao bro ur 4 years late

@PunmasterSTP 2 года назад

@@DC-np5kf I actually enjoy replying to old messages where someone says they are about to take a test or needed something for a class. It's led to a few cool conversations, and I think it also boosts engagement which can help out the video and the channel. Either way, how have you been doing as well?

@lhasaphosa3350 2 года назад

so did you pass the test...

@nekorinnya7931 7 лет назад

Thank you so much Professor! Now I know! This is great to perfect my quiz about it! 😊😊

@Kevinowski_A 7 лет назад

NekoRinNya seems like you also really needed help

@nekorinnya7931 7 лет назад

Kevin Aluka yeah I did really need help. :)

@creatureconnor 2 года назад

I wish I found you sooner! I'm not as stressed to take my exams anymore because I actually know what I'm doing now! It's weird how I learn more from these videos than I have in a whole month of lectures, and I have to pay thousands for those!

@zacherybrown5267 Год назад

A correction at 5:55...Chlorine has a highest electron affinity, there are several exceptions to the Electron Affinity Trend on the periodic table. This is due to the size and charge of the nucleus in relation to the distance of the valence electrons, space in the valence orbital, and the variation of "shielding" or electrostatic force that is imposed on the gained valence electron by inner-shell electrons.

@samwilson6578 5 лет назад

This boosted my understanding of chemistry so much, honestly a better review for the test that i took than what my teacher made. Great video!

@cloud9ine103 8 лет назад

This helped me so much for tomorrow's quiz! Thank you so much!!

@matthewb.6937 3 года назад

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

@alviyarizwan1247 4 года назад

this is really helpful. Helped me clear all my doubts. thank you

@matildachileshe6580 7 лет назад

I love your videos making my understanding of chemistry so simple now

@olivia_oneil 6 лет назад

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.

@cyrilsunday4199 8 месяцев назад

Love his teaching, it goes better the way he explains. BRAVO MONSIEUR DAVID

@Lucky10279 3 года назад

Thank you so much! This video explains everything so concisely.

@sirrichter5336 6 лет назад

SO HELPFUL THANK U SO MUCH, MY TEACHER CANT TEACH BUT U CAN

@NO-1-U-NO 6 лет назад

T_T That's a bit harsh don't you think?

@sirrichter5336 6 лет назад

StreamVid7 no, its true

@faidakombo1066 5 лет назад

Sir Richter good Explain

@bakerstreetbae3209 7 лет назад

Thank you so much! 1 hour lecture in just 7 minutes

@kalyanmadhu915 5 лет назад

thanks a lot....a 50 mins lecture explained in 9 mins....this really helped me a lot.Keep it up sir and good luck.

@anpanmanhope3977 3 года назад

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

@Walkingdeadman104 7 лет назад

I love you man. Straight to the point and easy to understand!

@dontask9330 6 лет назад

You explained really well, and that helped me a lot!

@PunmasterSTP 2 года назад

This is actually my very first Professor Dave video ever, and I have no idea how I went such a ridiculously long time before stumbling upon this man’s true genius.

@aaronestandarte6382 3 года назад

Thank you so much Professor Dave. I learned many things from you.

@emanimcbean5597 7 лет назад

This is so helpful! I'll most likely pass my Chem test tomorrow! Thank you!

@lukemiller8454 8 лет назад

Great video, packed with information.

@tarinipriyavabbalareddy5207 2 года назад

great explanation dude..thank you soooo much!

@carlosd.zaragosa5684 4 года назад

Dave u have helped me so much for my chem test tomorrow. I wish I found u earlier when I was taking bio

@eamoncrosby2368 4 года назад

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 💖

@Adar195 7 лет назад

thanks al lot professor..that was a wonderful presentation..

@brianbowe4313 2 года назад

This was beyond helpful and right on time omggggg. Thanks Professor Dave !!!🥺💕💕🥼🧫🧬🧪

@samantharamon1235 3 года назад

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

@raddyvogue976 7 лет назад

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

@joshuachaimson7890 6 лет назад

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

@imbatman4665 6 лет назад

joshua Chaimson Lmao

@soggy700 Месяц назад

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

@Tiya.borkar 21 день назад

The only man on RU-vid who teach almost all periodic table chaper under 8 minutes.😊 In very well way .

@anthonystark7195 3 года назад

I had an online assessment but I hadn't prepared. Honestly, this saved my life. Thank you!

@CarlosRamirezJz Год назад

Professor Dave, you are awesome. Even in these old videos you are explaining like a god in the education field. Imma give a class about this, and this explanation works so well for me. You are a big inspiration for me. Thank you so much!

@karthikb.v.a.s6644 3 года назад

Absolutely amazing Clear cut walkthrough of trends in 8 minutes is mind blowing! I was searching for something like this

@cyn107 5 лет назад

Oh my god you’re the first person who explained chem so that I could actually understand it so thank you so much!!!

@sam_lena797 3 года назад

Have been following u for a yr now and am really impressed with all ur videos professor Dave 👍👍👍

@pricilliacaldwell525 8 лет назад

I love you, you make learning easier and fun!

@LJTUBE06 Год назад

Gold content at the last minute. Will watch more earlier in future than having stress like rn 🗿

@mosokodimichellemawasha6191 3 года назад

I'm writing my chemistry exam in 5 days time and I'm already seeing myself through. Thank you Mr professor, your explaining this better.God bless🙌

@evanhunter47 5 лет назад

this video is excellent. you are worthy of all the praise you receive and much more.

@OliverHeady1234 6 лет назад

Thank you so much! you tauht me more in 7 minutes than my chem teacher did in two weeks 👍

@c.bhavazna5447 3 года назад

Chemistry is no more a chem'MYSTERY' to me!thank you professor dave

@onyxxstarr 9 месяцев назад

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

@curtpiazza1688 2 года назад

Great....love the magnet pulling off the electron....great illustration!

@potatosalad9713 7 лет назад

you deserve more subscribers!

@ProfessorDaveExplains 7 лет назад

spread the word!!

@lovedog1012 7 лет назад

totally telling my teacher about u tomorrow :DDD

@bladesofsaint1750 7 лет назад

you REALLY DOOO

@user-cv6nl9ck4o 7 лет назад

ohhahh yang 1

@themagm1673 6 лет назад

Oh HELL NAW

@Anaghish 7 лет назад

Thanks a lot Professor Dave, you helped me a lot for my test tomorrow! I'm totally going to tell all my friends about you ;) Liked and subbed!!

@ProfessorDaveExplains 7 лет назад

woo! glad to have helped!

@andream8671 5 лет назад

YOU SAVED ME SERIOUSLY THANK YOU 💯💯💯💯💯👏🏻👏🏻👏🏻👏🏻👏🏻

@randomnameidk15 Год назад

After not understanding this topic for months and months while the rest of my peers had already moved on, this video really helped me. I was like ohhhhhhhhh my gosh I finally understand. Thanks!!

@aarushigiri7103 Год назад

this was explained so well. best for one quick last minute revision before exams

@chemdv 11 месяцев назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lS-534fwgKI.html

@aryamanpratiraj6074 7 лет назад

Awesome video professor!! :D

@darisrani9591 3 года назад

you are really a blessing from heaven Professor thankyou for your hardwork , tutoring many students and making their dream possible.. Thankyou from the core of ma heart..

@jessydemirjian 5 лет назад

This video is very helpful! Thank you... You explained it better than my teacher.

@axlstiles3460 2 года назад

Thanks Dave 😃

@izzybella9653 7 лет назад

This guy is better than my difficult chemistry teacher.

@dobbylix737 2 года назад

thank you so much! watching this 6 years after upload but still helped sm!

@bintalskinteh3869 3 года назад

proffessor dave is just great! thank you so much

@emilysilk7621 7 лет назад

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

@mhx6437 4 года назад

So how did it go?

@bilgekorucu7523 3 года назад

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

@mhx6437 3 года назад

@@bilgekorucu7523 Ik

@bhoop2003 Год назад

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

@2030games 7 лет назад

This video helped me a lot! Thank you!!! :)

@2030games 6 лет назад

yo I'm back here again in second year chem your videos are still awesome keep it up Dave

@imbatman4665 6 лет назад

2030games All the best dude. I'm in my highschool second year as well

@bbeeyangli 2 месяца назад

super clear and powerful, and short! amazing!

@malaikabaig4929 4 года назад

Thank you! Those arrows on the periodic table really helped!

@connorchester4112 4 года назад

I love how I’m at my 1st semester final in 2019 and someone years later will see me struggle in this comment but I’m probably out of college by the time they read this, just want you too know everything is gonna be fine:)