Anions and Cations

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PranaviKolla2B
Posts: 114
Joined: Fri Aug 30, 2019 12:17 am

Anions and Cations

Postby PranaviKolla2B » Thu Oct 24, 2019 2:32 pm

Are anions larger than the atom and cations smaller, generally?

McKenna_4A
Posts: 115
Joined: Sat Aug 24, 2019 12:18 am

Re: Anions and Cations

Postby McKenna_4A » Thu Oct 24, 2019 2:33 pm

If it is of the same atom, an anion will have more electrons that a cation, therefore its ionic radius will be larger. So yes

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

Re: Anions and Cations

Postby Robert Tran 1B » Thu Oct 24, 2019 2:46 pm

If we are considering the anions and cations of one element, then the anion should be larger than the cation. This is because the anion will have more electrons, which creates more electron repulsion within the atom and increases the size of the electron cloud.

TarynD_1I
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: Anions and Cations

Postby TarynD_1I » Thu Oct 24, 2019 10:05 pm

Anions are bigger than their parent atoms because there is more negative electronic charge than positive charge, so there is more electron repulsion.

Cations are smaller than their parent atoms because the bigger positive charge from the nucleus makes the attraction of the electrons stronger, thus shrinking the atomic radius.

Tiffany Vo 3G
Posts: 52
Joined: Sat Aug 17, 2019 12:17 am

Re: Anions and Cations

Postby Tiffany Vo 3G » Thu Oct 24, 2019 10:55 pm

Anions are usually larger than cations because anions usually experience more shielding.


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