Q43 · CSIR-NET Chemistry, June 2014

Paper: CSIR-NET June 2014 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Hard

The correct order of the size of $\mathrm{S}, \mathrm{S}^{2-}, \mathrm{S}^{2+}$ and $\mathrm{S}^{4+}$ species is,
(a)$\mathrm{S}>\mathrm{S}^{2+}>\mathrm{S}^{4+}>\mathrm{S}^{2-}$
(b)$\mathrm{S}^{2+}>\mathrm{S}^{4+}>\mathrm{S}^{2-}>\mathrm{S}$
(c)$\mathrm{S}^{2-}>\mathrm{S}>\mathrm{S}^{2+}>\mathrm{S}^{4+}$
(d)$\mathrm{S}^{4+}>\mathrm{S}^{2-}>\mathrm{S}>\mathrm{S}^{2+}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Anions are larger and cations smaller than the atom, shrinking with charge: S²⁻ > S > S²⁺ > S⁴⁺.

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