Identify and name the metals out of the following elements whose electronic configurations are given below

[Murali]

Identify and name the metals out of the following elements whose electronic configurations are given below.

1. 2, 8, 2
2. 2, 8, 1
3. 2, 8, 7
4. 2,1

Answer:

(1), (2) and (4) are metals.

1.Magnesium
2.Sodium
3.Lithium