The chloride of a metal contains 71% chlorine by weight and the vapour density of it is 50. The atomic weight of the metal will be -

Options

A. 29
B. 58
C. 35.5
D. 71

Answer

A

Explanation

Let formula of compound is `MCl_(x)`
Molecular mass =100
Mass of metal =29 g
Mass of`Cl_(2)=71 g`
g ,eq. of metal - geq. Of `Cl_(2)`
`(29)/€=(71)/(35.5)`
`E=(29)/(2)`
Atomic mass = Eq . Mass`xx` valency
`=(29)/(2_xx2=29`