Question

An element X belongs to group 2 and another element Y belongs to group 15 of the periodic table.

a)What is the number of valence electrons in X?

b)What is the valency of X?

c)What is the valency of Y?

d)Predict the formula of the compound formed between X and Y.

e)What type of bond is formed between them and why?

Answer 1

Explanation:

a) 2 valence electrons

b) 2

c.xy2

d. ionic bond