first and second ionization energies  [ENDORSED]

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Sarah Rutzick 1L
Posts: 50
Joined: Tue Oct 10, 2017 7:13 am

first and second ionization energies

Postby Sarah Rutzick 1L » Thu Nov 02, 2017 5:07 pm

According to my notes from lecture, removing the second electron is always harder (second ionization energy is larger), but what about with elements like Mg? Wouldn't the first ionization energy for Mg be larger than the second since Mg has a full s orbital, therefore making it harder to remove the first electron?

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: first and second ionization energies

Postby SitharaMenon2B » Thu Nov 02, 2017 9:24 pm

It would be harder to remove the 2nd electron than the first because once the first electron is removed the atom becomes a cation, and the positive charge will have a much stronger pull on the electrons. Also, I think having a full s orbital would not make it harder to remove an electron, having a full octet is what would make it harder to remove an electron.

Wenxin Fan 1J
Posts: 53
Joined: Thu Jul 13, 2017 3:00 am

Re: first and second ionization energies

Postby Wenxin Fan 1J » Thu Nov 09, 2017 3:22 pm

After the initial electron is removed, the nuclear attraction on the electrons of the atom increases due to decreased electron electron repulsion. Making it more difficult to remove another electron.

Kai_Chiu 1F
Posts: 19
Joined: Fri Sep 29, 2017 7:03 am

Re: first and second ionization energies  [ENDORSED]

Postby Kai_Chiu 1F » Mon Nov 27, 2017 11:27 am

Wenxin Fan 1H wrote:After the initial electron is removed, the nuclear attraction on the electrons of the atom increases due to decreased electron electron repulsion. Making it more difficult to remove another electron.


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