What most likely an example of an angular molecule? a)nh3 b)h2o c)sicl4 d)h2co

Answer : The correct option is, (B)

Explanation :

Formula used  :

where,

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

First we have to determine the hybridization of the following molecules.

(a)

The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.

But as there are three atoms around the central nitrogen, the fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be trigonal pyramidal.

(b)

The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.

But as there are two atoms around the central oxygen, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular.

(c)

The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.

(d)

The number of electrons is 3 that means the hybridization will be and the electronic geometry of the molecule will be trigonal planar.

Hence, the molecule is most likely an example of an angular molecule.

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