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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

Pick out the incorrect statement

Options

  1. AP H 4 + ion is tetrahedral like the N H 4 + ion and is obtained when P H 3 is bonded to proton
  2. BP H 4 I is one of the most stable salts containing the phosphonium ion. It is also more stable than ammonium s
  3. CP H 4 I is decomposed by water to form P H 3
  4. DP H 3 converts silver salts in solution to silver phosphide, which subsequently reacts to give free metal

Correct answer

B. P H 4 I is one of the most stable salts containing the phosphonium ion. It is also more stable than ammonium s

Step-by-step solution

Phosphonium iodide is less thermally stable than ammonium salts, because phosphine is less basic than ammonia and decomposition occurs at 60 ° C . P H 4 I → P H 3 + H I A. P H 3 + H I → P H 4 I C. P H 4 I + H 2 O → P H 3 + H 3 O + + I - D. 6 A g + + P H 3 + 3 H 2 O → 6 A g + H 3 P O 3 + 6 H +

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