Homework prob 2A.19

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Maya Beal Dis 1D
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Homework prob 2A.19

Postby Maya Beal Dis 1D » Mon Oct 28, 2019 10:58 am

For part e of this problem, why is the ground state electron configuration [Ar]3d8 as opposed to [Ar]3d64s2? If an element is in the d block, is the (n-1)d shell always filled before the ns shell?

Daniel Honeychurch1C
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Joined: Thu Jul 11, 2019 12:15 am

Re: Homework prob 2A.19

Postby Daniel Honeychurch1C » Mon Oct 28, 2019 12:40 pm

The ground-state electron configuration for Ni is [Ar] 3d8 4s2. When 2 electrons are removed to make Ni+2, the 4s2 electrons are removed because they are in the highest energy sub-shell. Therefore, the ground-state electron configuration for Ni+2 is [Ar] 3d8

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