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

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.

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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