MCQ
Which of the following compound $CANNOT$ act as a Lewis base ?
- A$NF _{3}$
- ✓$PCl _{5}$
- C$SF _{4}$
- D$ClF _{3}$
✓
Answer
Correct option: B.
$PCl _{5}$
b
Lewis base : Chemical species which has capability to donate electron pair.
Lewis base : Chemical species which has capability to donate electron pair.
In $NF _{3}, SF _{4}, ClF _{3}$ central atom (i.e. $\left. N , S , Cl \right)$ having lone pair therefore act as lewis base.
In $PCl _{5}$ central atom $(P)$ does not have lone pair therefore does not act as lewis base.
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