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JEE Main 202117 MarchMorning Shift
Exam
JEE Main
Year
2021
Date
17 March
Shift
Morning Shift
Subject
Chemistry
Chapter
Ionic Equilibrium

JEE Main 2021 · 17 March · Morning Shift · Chemistry · Ionic Equilibrium

Which of the following compound CANNOT act as a Lewis base?

Which of the following compound CANNOT act as a Lewis base?

Options

  1. ANF3{NF}_{3}
  2. BPCl5{PCl}_{5}
  3. CSF4{SF}_{4}
  4. DClF3{ClF}_{3}

Correct answer

B. PCl5{PCl}_{5}

Step-by-step solution

Lewis base: Chemical species which has capability to donate electron pair.

In NF3,SF4,ClF3{NF}_{3}, {SF}_{4}, {ClF}_{3} central atom (i.e. N,S,ClN, S, Cl)
having lone pair therefore act as Lewis base.

In PCl5,{PCl}_{5}, central atom (P)\left(P\right) does not have lone pair therefore does not act as Lewis base.

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