Question

2. An element "X" belong to 3 period and group 13 in the Modern periodic table,
(i) Determine the number of valence electrons and valencyof X
(ii) What will be the molecular formula of the compound when X reacts with element Y.
(ii) What is the name and formula of the compound when X reacts with chlorine?
Give complete answer.​

Answer 1

1. since element x belongs to group 13 therefore valance electron is 3 and valancey of x will be 3.

2 when x reacts with y then formula is X2Y3.

3. When X combines with chlorine:

Atomic no of X = 13

i.e. X is Aluminum Al

Valency of X is 3 Valency of chlorine is 1

Therefore, the molecular formula will be:

AlCl3

hope it helps...

Answer 2

Valency is +3 and 3 valence electrons

Aluminium chloride ( AlCl3 )

Hope it helped

Explanation: