How many lone pair of electrons are present on the central atom of CH _4, NH _3, PCl _3 and PCl _5 molecules?

How many lone pair of electrons are present on the central atom o…

MCQ

How many lone pair of electrons are present on the central atom of $\ce{{CH}_4,{NH}_3,{PCl}_3}$ and $\ce{{PCl}_5}$ molecules?

✓
$0, 1, 1, 0$
B
$0, 1, 1, 1$
C
$0, 0, 1, 1$
D
$0, 0, 0, 1$

✓

Answer

Correct option: A.

$0, 1, 1, 0$

Methane $\ce{(CH_4)}$ does not have lone pair of electrons.
Ammonia $\ce{(NH_3)}$ has one lone pair of electron on nitrogen atom.
$\ce{PCl_3}$ has one lone pair of electron on phosphorous atom.
$\ce{PCl_5}$ does not have lone pair of electrons.

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