Question

1 gm of a chloride of an element contains 0.835 gm of chlorine. If the vapour density of chloride is 85, find the atomic weight of the element and its valency.

Answer 1

Answer:

atomic wt. is 28.05

valency is 4

Explanation:

now for 1gm of the chloride Cl is of 0.835gm which is of 83.5% of the weight then the metal would be (100-83.5)%=16.5% therefore the atomic wt of the metal would be the same 16.5% of the chloride's molecular weight .

hence the molecular weight of the metal is 16.5% of 170amu which is 28.05amu which is nothing but the element "Silicon." whose valency is 4