Periodicity | Full Topic | A level Chemistry

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Facts

[@fogcy]

You speak slower than my chem teacher and explain the concepts incredibly clearly, and simply even with the correct language. I learnt more in your 30 minute lesson and understood much more than I did in my school teachers 3 lessons. You are amazing!

[@chemistrytutor]

That's very lovely to hear! Thanks for the feedback 😀

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u are literally the best chem tutor on yt!! ur teaching style is great and soo easy to understand. i wish the future would have more teachers like you sir, thanks for all you do

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You are an absolute lifesaver kind sir.

[@chemistrytutor]

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Your videos are so useful. I love the way you explain it. I wish I had you as my chem teacher. Thank you so much for these amazing videos.

[@chemistrytutor]

That's very kind of you to say so. I'm really pleased they're useful 😀

[@HildeShomongula]

You are such a life saver Sir ❤...i never understood this topic before but now am better 🙏 keep it up Sir

[@chemistrytutor]

Thanks for the lovely feedback! Well done for sticking at it 👏

[@sparkles6396]

This was really helpful! I just started my alevels … and really helped me to understand this lesson.

[@chemistrytutor]

That's lovely to know! Thanks for the feedback 😀 This is a link document to all my videos. I'm continually adding to it. docs.google.com/document/d/1JfmOcGMNEMJzmxOx5AEoQqD74lAHC2FS/edit?usp=drivesdk&ouid=108041655224173585816&rtpof=true&sd=true

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Hands down to you sir, I am extremely weak at chemistry, but teachers like you gives me some hope to do well in AS... Thank you sir!

[@chemistrytutor]

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So, so well explained! Thank you!!

[@chemistrytutor]

Thank you for the lovely feedback!

[@tupac212]

Thank you, I watched this entire video and could make sense of it all the way through. ❤

[@chemistrytutor]

Excellent! Glad it was helpful!

[@tupac212]

​@@chemistrytutor Just wondering, are there any other online tutors that you used personally or like? For maths, physics or chemistry. Thank you. Oh and the first dip caused in ionisation energy, is not only due to the higher energy level of the p subshell but also because it has additional shielding from the 3s² electrons

[@Ssilver9241]

UR VIDEOS ARE AMAZING AND HELPFUL PLS POST MORE LIKE THIS!!

[@chemistrytutor]

Thank you for the kind words-so glad it was helpful

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Teacher like you can make students exams easy and can be a topper of the class

[@chemistrytutor]

@narayanapurushotham3958 thank you 😊

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Thank you so much for this video! I usually never comment, but this video is just so good. I finally understand this topic!

[@chemistrytutor]

Thank you so much for the kind feedback 😊 I'm really glad it's useful

[@_aryan_edu_]

Greetings!! Thank you very much for helping students like me with such helpful videos! Also, I noticed that access to the document you have with all your videos is not given, kindly check the settings to ensure anyone with the link is able to open the document. Thanks for this video again!!

[@chemistrytutor]

Hi, so sorry... this must have slipped through the net! I've updated the settings and it should work, please let me know if it doesn't! drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view

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Thank u so much, i understood everything so clearly!! Im pass my exam with flying colors!

[@chemistrytutor]

Glad it helped!

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Thank you sm for the video, it's quite helpful! ✨

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Thanks! It’s always a pleasure to hear this feedback.

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@ Aww, yeah and it comforts me know that such dedicated teachers still exist. :)

[@chemistrytutor]

@@abehaahsan4130 😃

[@justsomeone2001]

Are your videos also applicable to the Edexcel IAL board?

[@chemistrytutor]

Yes definitely. The main differences between exam boards are exam structure and question type. The content is 95% or more identical

[@laveezaaa]

really helpful, is this the CIE cambridge syllabus? if so does this come under chapter 2- electrons in atoms??

[@chemistrytutor]

I'm really pleased it's useful 😀 It's not for any exam board in particular. It's inorganic Chemistry, so I think for CIE that starts at topic 9? Chemical Periodicity

[@_penguin_.]

Is this Alevel Syllabus chapter 9 complete? Love the way you explain👍

[@chemistrytutor]

Thank you! Yep, whole topic 😀

[@David-b6w2g]

can i use this for as level too

[@chemistrytutor]

@David-b6w2g absolutely yes. For chemistry, any topic from the first year is no different when you move into the second year. So any videos I make of an AS topic will be perfect for you to use (and just as helpful for people doing A level)

[@justsomeone5660]

sir, have you also made a video on mass spectrometry?

[@chemistrytutor]

Hi, yes I have... here you go kzbin.info/www/bejne/hWjGlKZ-g82WnpY

[@SevidzemBurinyuy-u4p]

thanks sir you are an inspiration to the world

[@chemistrytutor]

This comment made me smile! I really appreciate it 😀

[@lolumad3462]

Thank you very mucb sir we students very much appreciate your hard work :)

[@chemistrytutor]

Thank you for your kind feedback! It's very nice to know it's useful 😊

[@Krishnaslover.]

@@chemistrytutor hi sir,is there any video specifically on the scales of electronegativity,like Pauling scale and all?? It would be really helpful!

[@chemistrytutor]

@@Krishnaslover. here's a video about Polarity and electronegativity kzbin.info/www/bejne/bmKnd42Hial3aMk

[@avighnas2334]

thanks, why is there not a dip on Mg where 2 electrons are in 1 orbital in s subshell 15:53

[@chemistrytutor]

Great question. I think there is, slightly, but its masked by the s orbital being closer to the nucleus than p. So the repulsion is outweighed by being closer to the nucleus that has a higher nuclear charge

[@avighnas2334]

@@chemistrytutor thanks!

[@chemistrytutor]

@@avighnas2334 no probs 😃

[@Hanniix0]

this video was very very helpful. thank you

[@chemistrytutor]

@Hafsahh.x0 So pleased to hear you liked it-thanks for watching! 😃

[@abdulemalik8848]

Thank you very much. God bless you sir

[@chemistrytutor]

I appreciate your kind words 😊

[@UmiNoor-tk2wi]

Sir there are some questions that are asked in this topic like the oxidation number of some rxns I think , can u plzzz help me with that . Thank u , u r wonderful teacher ever🙂

[@chemistrytutor]

Lovely to hear from you! I'm glad the videos are useful. Oxidation States tend to come in more in the redox topic, along with group 2 and group 7. I've done a video about redox: kzbin.info/www/bejne/mJvXgJKGesyXbJY

[@xyth007]

26:24 So would you say the reason why P, S and Cl have slightly higher mps than argon is due to the covalent bonds being present which need energy to be broken aswell as vdw forces too, while argon only and only has vdw forces to break?

[@chemistrytutor]

No, I'm afraid that's not it. When you melt something you don't break any Covalent bonds. Think about ice... its solid H2O, water is liquid H2O. All the bonds are still intact. It's due to the Molecules that you mentioned being larger than an argon atom there is additional surface area so the vdw forces between Molecules are stronger. Stronger (or more) vdw forces means that more energy needs to be put in to break them

[@notwincy]

so electronegativity decreases down a group because there’s more energy levels -> causing a wider distance between outer electrons and nucleus -> therefore less pull from the nucleus. but if the effective nuclear charge stays the same down a group, how can the nucleus have less pull? is effective nuclear charge and the nuclear charge mentioned in the video different?

[@chemistrytutor]

It's that nuclear charge (which does increase as you said) becomes less significant than the increase in distance down the group along with the extra shielding. The decrease in attraction caused by these two things is much more significant

[@justsomeone5660]

soo helpful, thank you so much! can u please make videos on unit 2 of edexcel ial?

[@chemistrytutor]

I'm less familiar with that course. Is that the unit that includes Transition Metals, Amino acids and Amines?

[@justsomeone5660]

@@chemistrytutor yep, I'd really appreciate if you check the Edexcel IAL specification and make videos on those topics 🙏

[@chemistrytutor]

@@justsomeone5660 well, I've already made some videos about these topics. They're exam question focused, so whilst I don't go through all the facts one at a time, they deliberately cover a lot of the content drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drivesdk

[@ravjayakodi2746]

@ 14:04 why exactly do the p subshell have slighly higher energy?

[@chemistrytutor]

You've asked a really simple sounding question that actually has a number of very complicated answers. You don't need to know if for a level but the explanation that ties in with something you do need is that its to do with shielding (some places call it screening) and electron-electron interactions. The deeper you go into electron orbitals the more our model gets refined by quantum mechanics. So if you want to go further, that's the direction to go.

[@ravjayakodi2746]

@@chemistrytutor thanks, im gonna hold that thought bc I have an AS chem mock and a maths one tomorrow.(praying they dont lower my predicted grade from an A)

[@chemistrytutor]

@ravjayakodi2746 good luck 👍

[@avy8479]

really useful video, thanks a ton!

[@chemistrytutor]

Very welcome! Thanks for the feedback 😀

[@avy8479]

@@chemistrytutor do u have vids for all other chapters as well? do u have a video for reactions of period 3 with oxygen, water and chlorine?

[@phobia2276]

why dont you talk about how shielding affects ionisation energy and and electronegativity? These are valid points aswell.

[@chemistrytutor]

You're correct, shielding can definitely affect those properties. However, when considering the pattern across a period (which is what periodicity looks at) the elements in a particular period all have the same shielding, so that wouldn't explain any changes you observe. If we'd been looking at a pattern down a group you would be correct to mention an increase in shielding

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Thank you so much for these videos, they mean a lot:).

[@chemistrytutor]

It's great to know they are useful 😀

[@nakkanasrinuvasrao2017]

Excellent,i want more videos sur🎉❤

[@nakkanasrinuvasrao2017]

❤❤ gud sir

[@chemistrytutor]

More to come!

[@ChowYeez]

You are awesome!!!!!Post more

[@chemistrytutor]

Your feedback really motivates me. Thank you! Aromatic Chemistry video out tomorrow!

[@chemistrytutor]

kzbin.info/www/bejne/h4OXomukq8d0Z68

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MAY GOD BLESS YOU!!!!!!

[@chemistrytutor]

Glad the video was useful 😃

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sir thanks❤❤

[@chemistrytutor]

Very welcome 😀 👍

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Thank you sir

[@chemistrytutor]

Very welcome 😀

[@mio7552]

where have you been all this time!!!

[@chemistrytutor]

Thank you! I'm very happy it's useful ☺️

[@nittinbakshi2161]

Where can we get these slides

[@chemistrytutor]

It's a great question! Currently not available. Would they be useful?

[@huzaifakhan2798]

No he thinks it'll be useless, thts why he's asking, duuuhhhh

[@chemistrytutor]

@huzaifakhan2798 thanks for your comment. Making the slides into a document isn't a quick job so I wanted to find out how useful it would be as to whether it was the best thing to prioritise 😀

[@huzaifakhan2798]

@@chemistrytutor Im sorry, i didnt realise. Mb

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@@chemistrytutor your videos are really useful i always come here to watch vids on topics i dont get and it helps so much with the understanding.maybe u could attach the notes you make instead of slides ?

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Thx teacher you're the best

[@chemistrytutor]

😃

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Thank you sur

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Very welcome 🙏

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Video is helpful:) but annoying relatives aren't letting me learn peacefully;(

[@chemistrytutor]

I'm glad it was useful! Hopefully, you got some learning done later 😃

[@arifurrahman3646]

Grt explanation!

[@chemistrytutor]

Thank you! 😊 It's really nice to know it's useful 😊

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Who is hear for Exams 👇

[@chemistrytutor]

Good luck with the revision!

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I love it

[@chemistrytutor]

😃

[@OkekeChiamaka-zy6rb]

Wow😭so this is A level in America This is O level in Africa😭😭😭😭😭

[@chemistrytutor]

😬 that's tough! Yes, this is what 16-17 year olds study in the UK

[@christenebeukes]

When American year 12 work is our year 10 work😭😭

[@chemistrytutor]

😲

[@chemistrytutor]

That seems unfair!

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​@@chemistrytutoryou probably don't need to know much of this for GCSEs if any of this stuff

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Wow

[@chemistrytutor]

😀👍

[@perfectlena]

Very helpful! Cleared all my doubts❤️‍🩹

[@chemistrytutor]

Excellent! I'm really pleased it was useful!

[@perfectlena]

i'm rewatching for my finals and found this comment, lol. Still as useful.