Question

if an element X is placed in group 14 what will be the formula and nature of bonding of its chloride

Answer 1

As the element X is placed in group 14 then the valency of the element is 4.
Now we know that the valency of chlorine is 1 as it's atomic number is 17.
So as the element X has the valency 4 it can neither gain nor lose electrons to attain octet.
So it makes a covalent bonding with four atoms of chlorine to form a compound XCl4.

Answer 2

The formula will be XCl4. The element X of group 14 will have 4 valence electrons. So, it shares its 4 electrons and form covalent bond with 4 chlorine atoms.