VSEPR and Bond Hybridization

AP Chemistry· difficulty 3/5

NH₃ has 3 N-H bonds and 1 lone pair on N. Its geometry is

A
$Trigonal planar (120°)$
B
$Trigonal pyramidal (~107°)$
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C
$Tetrahedral$
D
$Linear$

Explanation

4 electron domains (3 bonds + 1 lone pair) \to tetrahedral electron geometry. Considering only atoms: trigonal pyramidal. Lone pair repels more, compressing H-N-H to ~107°.

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