Question

An element X is placed in 2nd Group and 3rd Period of the
Periodic Table, burns in presence of oxygen to form a basic oxide.
(a) Identify the element X and write it's electronic configuration.
(b) Write the balanced equation when it burns in the presence of air.

(c) Name an element that belongs to 4 period with same valency as that
ofx​

Answer 1

Explanation:

(a) magnesium

electronic configuration is 2,8,2

(b) 2mg+O2-> 2mgO

(c) Calcium

hope it helps