Q56 · CSIR-NET Chemistry, June 2015

Paper: CSIR-NET June 2015 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Easy

The correct set of pseudo halide anions is
(a)$\mathrm{CN^{-}}, \mathrm{ClO_4^{-}}, \mathrm{BF_4^{-}}, \mathrm{PF_6^{-}}$
(b)$\mathrm{SCN^{-}}, \mathrm{PO_4^{3-}}, \mathrm{H_2PO_4^{-}}, \mathrm{N_3^{-}}$
(c)$\mathrm{N_3^{-}}, \mathrm{NO_3^{-}}, \mathrm{HSO_4}$ $\mathrm{AsF_6^{-}}$
(d)$\mathrm{CN^{-}}, \mathrm{N_3^{-}}, \mathrm{SCN^{-}}, \mathrm{NCN^{2-}}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
CN⁻, N₃⁻, SCN⁻, NCN²⁻ (d).

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