Question

An element X' belongs to second period and second group of the periodic table. Find:

(1) the number of valence electrons.

(ii) the valency of the element.

(ii) whether element X forms acidic or basic oxide. ​

Answer 1

Answer:

The element which belongs to 3rd period and group 2 is Magnesium.

Its electronic configuration is [Ne]3s2

i) The no. of valence electrons =2

ii) Valency =2

iii) It is a metal as it belongs to the s-block

Answer 2

Answer:

(I) 2

(ii) 2

(iii) acidic oxide

hope you like it..