Answer:
Option A. 0
Explanation:
To know the number of lone pair on each H in NH3, we shall determine how NH3 is formed. This is illustrated below:
3H + N —> NH3
Three atoms of Hydrogen, H reacted with 1 atom of nitrogen to produce ammonia, NH3. Each atoms contribute one electron each to form the covalent bond in NH3.
Hydrogen has only one electron and it will share it with the nitrogen atom to produce ammonia.
Further details can be seen in the attached photo.
Further more, in the attached photo, we can see that there is no lone pair of electron in the hydrogen atom as all it's electron has been used to form bond with the nitrogen atom. Only the nitrogen has a lone pair of electron.
Therefore, there are zero lone pair of electron on each hydrogen, H atom in ammonia, NH3.
