Question

An element 'M' has atomic number 12.

(i) Write its electronic configuration and valency.

(ii) Is 'M' a metal or a non-metal ? Give reason in support of your answer.

(iii) Write the formula and nature (acidic/basic) of the oxide of M.

Answer 1

(i) Electronic Configuration -2,8,2

Valency - 2.

(ii) Metal

There are two electrons in its outermost shell and it easily loses them to form a positive ion.

(iii) M -2

O-2

M₂O₂ = MO

It is a basic oxide.