Question

What is the electron configuration for cobalt z=27? Why?

Answer 1

Well, we got 27 electrons to distribute according to the aufbau scheme...

Explanation:

And so...

`underbrace(1s^(2)2s^(2)2p^(6)3s^(2)3p^(6))_"argon configuration"4s^(2)3d^(7)`...