If ${\rm{N}}{{\rm{a}}^ + }$ ion is larger than ${\rm{M}}{{\rm{g}}^{2 + }}$ ion and ${{\rm{S}}^{2 - }}$ is larger than ${\rm{C}}{{\rm{l}}^ - }$ ion, which of the following will be stable soluble in water?

NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

1 Medium

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Analyzing +4 | -1

\mathrm{N}{\mathrm{a}^ + }

ion is larger than

\mathrm{M}{\mathrm{g}^{2 + }}

ion and

{\mathrm{S}^{2 - }}

is larger than

\mathrm{C}{\mathrm{l}^ - }

ion, which of the following will be stable soluble in water?

View answer and explanation

Correct option: D

Magnesium sulphide

Option D (Magnesium sulphide) is correct because larger cation and larger anion leads to lower lattice energy and hence more soluble.