Choose the correct statements for the Group 15 halides: (i) AsCl₃ can form complexes of type [AsCl₄]⁻ in the… · ABC26IN0213
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR NET 2020 · Marks: 2 · Difficulty: Medium
Choose the correct statements for the Group 15 halides:(i) $\mathrm{AsCl_3}$ can form complexes of type $\mathrm{[AsCl_4]^-}$ in the presence of a chloride source(ii) $\mathrm{PF_3}$ acts as a strong a-donor ligand towards d-metals(iii) In the solid state, $\mathrm{SbF_5}$ has a trigonal bipyramidal structure(iv) The reaction of $\mathrm{SbF_5}$ with anhydrous HF generates $\mathrm{[H_2F]^+}$ ions
(a)(i) and (iv)
(b)(ii) , (iii) and (iv)
(c)(i) , (iii) and (iv)
(d)(ii) and (iii)
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
(i) AsCl₃ + Cl⁻ → [AsCl₄]⁻ true; (ii) PF₃ is a strong π-acceptor, not a strong σ-donor; (iii) solid SbF₅ is a cis-fluoride-bridged tetramer with octahedral Sb; (iv) SbF₅ + 2HF → [H₂F]⁺[SbF₆]⁻ true — (i) and (iv) (a).