The equivalent weight of a certain trivalent element is 20. Molecular weight of its oxide is
The equivalent weight of a certain trivalent element is 20. Molecular weight of its oxide is
A. `168`
B. `68`
C. `152`
D. `56`
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Correct Answer - A
At mass of element `= 20xx3=60`
Formula of its oxide is `M_(2)O_(3)`
`:.` Molecular mass of its oxide
`= 2xx60+16xx3`
`= 120 + 48 = 168`
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