Question

2. What is the electron configuration of an electrically neutral atom of magnesium?

Answer 1

First shell at most 2
Second shell at most 8
That gives you 2+8=10 electrons
You still have 12-10=2 electrons left, which all go to the third shell
So you have 2,8,2

Answer 2

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Answer 3

Thanks I was just having a few issues on if i subtract or not

Answer 4

no problem :)