Question

electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s1 (which element is that?)
and the second one is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 ?

Answer 1

Answer:

hey here goes your answer.

Explanation:

1. the element is 29 the number that is copper.

2. the second one is 30 the number that is zinc.

I hope it will help you...

Answer 2

copper and zinc respectively