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NEET2011Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following fluorides does not exist?

Options

  1. ANF ₅
  2. BPF ₅
  3. CAsF ₅
  4. DSbF ₅

Correct answer

A. NF ₅

Step-by-step solution

P , As and Sb form pentahalides of the general formula E X₅ (where, E= P , As and Sb ) due to the presence of vacant d -orbitals in their respective valence shell. N does not form pentahalides due to the absence of d -orbitals in its valence shell.

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