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The carbonate of a metal is isomorphous ...

The carbonate of a metal is isomorphous with `MgCO_(3)` and contains 6.091 percentage of carbon. The atomic weight of metal is

A

`48`

B

`68.5`

C

`137`

D

`120`

Text Solution

Verified by Experts

The correct Answer is:
C
Let the formula of the metal carbonate be `MCO_3` then percentage of carbon is
`(12)/(x+60)=(6.091)/(100)` where x = atomic mass of M
`(1200)/(6.091)=x+60" ":. "" x=(1200)/(6.091)-60=197.01-60=137.01`
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