Question

The formula of oxide of a metal is $MO$ and equivalent weight of metal is $20$. The atomic weight of metal is

• A. $40$
• B. $20$
• C. $30$
• D. $10$

Answer 1

The correct option is A $40$

Valency of $M$ in $MO=2$
Equivalent wt. of $M=20$
Atomic wt. of $\text{M = Equivalent wt. Valency}$
$=20\times 2=40$