Many atoms have non-integral atomic masses because

Statement $1$: The equivalent mass of $Cu$ in $CuO$ is $63.6$ and in $Cu_2O$ is $31.8$. Statement $2$: Equivalent mass = $\frac{\text{Molecular mass}}{\text{Valency}}$

When an ion absorbs $6 \times 10^{20}$ electrons,it gets reduced. What is the number of gram equivalents of the ion?

The equivalent weight of potassium permanganate $(KMnO_4)$ in an acidic solution is:

The present atomic weight scale is based on

The equivalent weight of a divalent metal is $W$. The molecular weight of its chloride is...