#1E17 help

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Amina Durrani 3G
Posts: 52
Joined: Sat Jul 20, 2019 12:16 am

#1E17 help

Postby Amina Durrani 3G » Sat Oct 26, 2019 2:23 pm

For part b of this problem, the electron configuration for Mn is [Ar] 4s^2 3d^5 right? The question is asking from which orbital will an electron be removed to form a +1 ion, and the correct answer is from the 4s orbital but can someone explain why its from this orbital and not 3d^5?

Michelle Shin 4B
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: #1E17 help

Postby Michelle Shin 4B » Sat Oct 26, 2019 3:17 pm

An electron will be removed from the 4s orbital because the 4s orbital has a lower energy than 3d. 4s has higher energy when when the 4s state is occupied AND electrons enter the 3d state.

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