Question

Explain the shape of nh3 molecule according to vsepr theory

Answer 1

Answer:

Ammonia has 4 regions of electron density around the central nitrogen atom (3 bonds and one lone pair).

These are arranged in a tetrahedral shape. The resulting molecular shape is trigonal pyramidal with H-N-H angles of 106.7°.

Answer 2

The shape of $NH_3$ molecule according to vsepr theory is trigonal pyramidal.

Explanation:

Formula used :[tex]{\text{Number of electrons}} =\frac{1}{2}[V+N-C+A] [/tex]

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

For $NH_3$

[tex]{\text{Number of electrons}} =\frac{1}{2}[5+3-0+0]=4 [/tex]

The number of electrons is 4 that means the hybridization will be $sp^3$. the electronic geometry should be tetrahedral. But as there are 3 bond pais and 1 lone pair, molecular geometry of the molecule will be trigonal pyramidal.

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