Homework 1E.13 Silver

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Kyleigh Follis 2H
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Homework 1E.13 Silver

Postby Kyleigh Follis 2H » Thu Oct 18, 2018 1:28 pm

Why is the ground state electron configuration for silver [Kr] 4d^10 5s^1 rather than [Kr] 4d^9 5s^2?

Katie Sy 1L
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: Homework 1E.13 Silver

Postby Katie Sy 1L » Thu Oct 18, 2018 1:31 pm

It's because you want to complete the 4d orbital before moving onto the 5s orbital. A full 4d orbital contains 10 electrons.

Rachana Jayaraman 1H
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Homework 1E.13 Silver

Postby Rachana Jayaraman 1H » Thu Oct 18, 2018 9:14 pm

There is an exception to electron configurations in which if there are 4 or 9 electrons in the d orbital, then instead of having 2 electrons in the following s orbital, you add an electron to the d orbital to make it 5 or 10 electrons. This is because a half filled or complete d orbital has a lower energy state than a d-orbital with 4 or 9 electrons respectively.

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