Question

An element R forms an oxide RO. 1.What is the valency of element of R 2. What will be the molecular formula for chloride of R

Answer 1

hey mate

here is your answer

the valency of oxygen is 2.

so the valency of R is also 2.

as its oxide has the formula RO.

the valency of Cl is 1.

thus the molecular formula of it's chloride is RCl2.