Vapour density of a metal chloride is `6.6`. Its oxide contains `53%` metal. The atomic weight of metal is:

Options

A. (a)`21`
B. (b)`54`
C. (c )`27.06`
D. (d)`2.086`

Answer

C

Explanation

Let wt. of metal oxide`=100 g`
wt. of metal`=53 g`
wt. of oxygen`=47 g`
Equivalent weight of oxygen
`=("wt. of metal")/("wt. of oxygen")xx8=53/47xx8=9.02`
Valency`=(2xxV.D)/(E+35.5)=(2xx66)/(9+35.5)=132/44.5=2.96~~3`
`:.` Atomic weight=Equivalent weight `xx`Valency
`=9.20xx3=27.06`