Electron affinity: period trend | Atomic structure and properties | AP Chemistry | Khan Academy

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[joshporter]

My mind is fried bc my chem teacher sucks at teaching and apparently I've learned nothing from her classes the past two years.

[vanidasari]

my teacher was an stealer she won't clarify our doubts but takes fees so i learn chemistry in youtube i did not understand electron affinity this video clarified all doubts of mine you deserve a bright future

[sauravsharma]

Divided by nations, United by learning !

[maripaz]

So good, didn't take AP chem but this makes a lot of sense!

[rishabh]

love it, i was't able to understand after attending 2 classes and watching a online video twice but, khan academy made it clear

[مريم-فقث]

Yet I don't understand why energy is released when an electron is added!

[SAU_Islamic_Community]

It cleared my idea about E.affinity... Thanks brother.

[mjn]

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[ashrithaammmmm]

this literally helped so much. thank you khan academy. gonna go and ACE my test bye 🏃‍♂️🏃‍♂️🏃‍♂️

[swatidwivedi]

Thank you so much sir. You made so many points clear :D

[Sadhna]

So helpful video.... Thanks khan academy

[ThaoNguyen-trkv]

thank u so much, i'm from vietnam🤩

[alexfontaine]

I thought energy was released when you lose an electron so now energy is released again when you gain an electron? If the energy is given off then the atom would lose that energy and be neutral again right? so are electrons just energy and not matter?

[melissarainchild]

Super vid, thanks a lot :)Keep 'em commin' !

[rohitgoyal]

why boron has less electron affinity than lithium

[shanthielizabeth]

i have one doubt when we add an electron to lithium which has the configuration 1s^2 2s^1 its configuration changes to Li^-1 so Li^-1 configuration looks like beryllium ...so ...when
I find an atom in nature while im in a kind of a research(just a thought) ...with the configuration of 1s^2 is it beryllium or Li^-1 pls help

[darkstromx]

But what's the need of electron affinity, when we can do well with electron gain enthalpy as it is according to thermodynamic

[RuthBingham]

Does lithium (EA = -60) every really form an anion? I am accustomed to the idea of a lithium cation, but not anion.

[mukulgidney]

If nitrogen doesn't have an affinity for an electron then why doesn't a carbon atom also have its electron affinity as zero. Doesn't carbon also have 4 half filled orbitals?

[anneclarence]

I'm sorry, I'm just wondering, wasn't Zeff supposed to be # of protons - # of core electrons? In other words, should've it been 10 - 2 (because of electrical configuation, 2, 8, 18, 32)? Also, how did you find the "shileding" electron?