Question

the chemical formula of sodium chloride is nacl and chemical formula of zinc chloride is zncl2 why it is so explain?

Answer 1

because when sodium react with chlorine it's forms sodium chloride.,similarly with Zn an class.

Answer 2

Because of valency.
Valency of sodium = + 1
Valency of chloride = - 1

So it form a Compound NACL.

Na. Cl

+1. -1


So by crossing method
Multiple by exchange no.
So it form NACL


valency of chloride = - 1
Valency of zinc. = + 2

So it form a Compound ZnCL 2
By crossing method

Zn. Cl.

+2. -1


Do the crossing multiple so it form ZnCL 2...

Hope it will definitely help you