Noble Gas Electron Affinity

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Danielle Goldwirth 3F
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Joined: Wed Sep 30, 2020 10:07 pm

Noble Gas Electron Affinity

Postby Danielle Goldwirth 3F » Sun Nov 01, 2020 10:15 pm

I understand that noble gases need energy input to get another e- (low affinity) because they already have an octet, but why do we say then that they have low affinity rather than ABSOLUTELY NO affinity if they are stable/satisfied already?

Joseph Hsing 2C
Posts: 93
Joined: Wed Sep 30, 2020 9:42 pm

Re: Noble Gas Electron Affinity

Postby Joseph Hsing 2C » Sun Nov 01, 2020 10:19 pm

I'm not entirely sure, but I feel in Chem there are rarely absolutes as most things are viewed in comparison to one another. I know it is possible for a noble gas to receive an electron, just very very unlikely, so we can't say zero affinity.

905579227
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Re: Noble Gas Electron Affinity

Postby 905579227 » Sun Nov 01, 2020 11:55 pm

I know that this is not the exact place for this question but does anyone know if we can ask for extensions on assignments because i did not finish my assignment on time. If so how do we go about it with asking. Literally online school sucks, I cant find anyone to actually help me with the things i dont understand.

Kailani_Dial_2K
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Re: Noble Gas Electron Affinity

Postby Kailani_Dial_2K » Mon Nov 02, 2020 6:56 pm

So the definition of electron affinity is the energy released when an e- is added to the gas phase of an atom. The reason that they have low eectron affinity is because it is still possible for you to add an electron to the outer valence shell of a noble gas it just won't be stabe and will soon return to its natural state. However, we can't say that they have NO affinity because of this possibility.

Lily Kiamanesh 2G
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Joined: Wed Sep 30, 2020 10:09 pm

Re: Noble Gas Electron Affinity

Postby Lily Kiamanesh 2G » Tue Nov 03, 2020 3:58 pm

Hi, I think that it is said that noble gases have essentially 0 electron affinity, meaning that it almost is 0. I believe that it is not actually 0 because it is possible, just highly unlikely.

Eunice_Castro_1G
Posts: 91
Joined: Wed Sep 30, 2020 9:46 pm

Re: Noble Gas Electron Affinity

Postby Eunice_Castro_1G » Tue Nov 03, 2020 4:01 pm

Hi! Noble gasses don't just have a low affinity, they have 0 affinity. Hope this helps!

Jason Knight - 1F
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Joined: Wed Sep 30, 2020 9:55 pm

Re: Noble Gas Electron Affinity

Postby Jason Knight - 1F » Tue Nov 03, 2020 4:56 pm

Noble gases essentially have zero electron affinity, because an added electron would be in the new energy level due to the fact that noble gases have eight electrons in their valence shell, with the exception of Helium at 2 which is also considered full.


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