Question

Please help me with this question?

Answer 1

Explanation:

This is Potassium.

a)True at m-shell

b)No,it forms charge +3 as atomic no. is 19

Configuration 8 8 3

D) Molar mass=No. of protons+No.of neutrons

=58

It is not stable

Answer 2

Explanation:

Hello mate here is ur answer

I hope this helps u out...