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The oxide of a metal contains 40% of oxy...

The oxide of a metal contains `40%` of oxygen. The valency of metal is 2. what is the atomic weight of the metal ?

A

`~~87`

B

`~~70`

C

`~~77`

D

`~~93`

Text Solution

Verified by Experts

The correct Answer is:
A
meq. Of metal = meq of oxygen
`(60)/(E) = (40)/(8) :. E = 12`
Now meq of metal = meq of bromide
`(100 -a)/(12) = (a)/(80) :. a ~~ 87%`
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