Electron Configuration: 2A.5B

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Rita Chen 1B
Posts: 112
Joined: Sat Jul 20, 2019 12:15 am

Electron Configuration: 2A.5B

Postby Rita Chen 1B » Mon Oct 28, 2019 1:26 pm

Can someone please explain to me how to do part B of 2A.5? I don’t get how to incorporate the F-block.

The question is Give the ground-state electron configuration expected for Bi3+.

Brian_Ho_2B
Posts: 221
Joined: Fri Aug 09, 2019 12:16 am

Re: Electron Configuration: 2A.5B

Postby Brian_Ho_2B » Mon Oct 28, 2019 1:32 pm

Recall how for the d-block, we subtracted 1 from the period number that it was actually in. For f-block, subtract 2 from the period number that the atom appears to fall in. Remember to use Aufbau's principle to figure out which subshell comes after which. For Bi, it is [Xe] 4f14 5d10 6s2 6p3.


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