What is the angle between two of the nitrogen-hydrogen bonds in the ammonium ( nh4 ) ion?

Answer : The angle between two of the nitrogen-hydrogen bonds in the ammonium ion  is,

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  molecules.

The number of electrons are 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral and the bond angle will be, .

Hence, the angle between two of the nitrogen-hydrogen bonds in the ammonium ion  is,

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).