Question

The equivalent weight of a metal in different compounds are $18.6$ $28$. Atomic mass of the metal would be:

• A. $18.6$
• B. $28$
• C. $46.6$
• D. $56$

Answer 1

The correct option is D $56$

Ratio of equivalent weight= $\frac{18.6}{28}=\frac{1}{1.5}$

$\therefore$ Ratio of valency= $\frac{1}{1.5}=\frac{2}{3}$

$\therefore$ Atomic weight= $18.6\times 3=28\times 2\approx 56$