Question

The ionic compound $Ca(OH{)}_2$ on dissociation will give cation X. The charge on X is _______.
[1 Mark]

Answer 1

Correct answer is 2.
[1 Mark]

The dissociation of ${\text{Ca(OH)}}_2$ is given as:
$Ca\left(OH{)}_2\right(aq)⟶C{a}^{2+}+2O{H}^{-}$
A positive ion is called a cation and a negative ion is called an anion. So, charge on X (Ca) is +2 and that on the OH is -1.