VSEPR and Bond Hybridization

AP Chemistry· difficulty 3/5

NH3 is polar because:

A
$It has trigonal planar geometry$
B
$Hydrogen is more electronegative than nitrogen$
C
$The N-H bond dipoles do not cancel due to the lone pair on N (asymmetric geometry)$
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D
$The molecule is symmetric$

Explanation

The trigonal pyramidal shape (lone pair on N) means individual N-H dipoles add constructively, producing a net dipole.

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