Which of the following molecules would be expected to have a trigonal planar geometry? a
NH3

b
CH4

c
H2O

d
CH2O

CH2O

Explanation:

According to the valence shell electron pair repulsion theory, electron pairs tend to position themselves as far apart in space as possible to minimize repulsion.

The shape of a molecule depends on the number of electron pairs present on the valence shell of the central atom in the molecule- both lone pairs and bond pairs.

CH2O has three electron domains. the possession of three electron domains and no lone pairs of electrons on the central atom corresponds to a trigonal planar geometry.

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