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

Identify and name the metals out of the following elements whose electronic configurations are given below. (i) 2, 8, 2 (ii) 2, 8, 1 (iii) 2, 8, 7 (iv) 2, 1

Answer - (i), (ii) and (iv) are metals. i.e. (i) Magnesium (ii) Sodium (iv) Lithium