1. K₃[AlF₆] 2. AlH₃ 3. K[AlF₃H] 4. K₃[AlF₃H₃]

Answer: 1. K₃[AlF₆] Key idea: AlF₃ is covalent and insoluble; extra F^- from KF forms a soluble complex. AlF₃+3KF→ K₃[AlF₆] The stable hexafluoroaluminate ion [AlF₆]³⁻ is soluble. Hydride-containing species are not formed because no hydride source is present.

Topic: Electronic configuration and general trends, Group 13 and 14· p-Block Elements

AlF_3 is soluble in HF only in presence of KF. It is due to the formation of

1. $K_3[AlF_6]$

2. $AlH_3$

3. $K[AlF_3H]$

4. $K_3[AlF_3H_3]$

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 2 Practice test neet Save WhatsApp Report

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Answer: 1. $K_3[AlF_6]$

Key idea: $AlF_3$ is covalent and insoluble; extra $F^-$ from KF forms a soluble complex.

$$\mathrm{AlF_3+3KF\rightarrow K_3[AlF_6]}$$

The stable hexafluoroaluminate ion $[AlF_6]^{3-}$ is soluble. Hydride-containing species are not formed because no hydride source is present.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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AlF_3 is soluble in HF only in presence of KF. It is due to the formation of

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