Carbon in methane has a valency of 4, as it shares its four valence electrons with four hydrogen atoms to achieve stability.

In a molecule of ammonia, single covalent bonds are present between the nitrogen atom and each of the three hydrogen atoms.

In the electron dot structure of ammonia, the nitrogen atom shares one electron each from three hydrogen atoms, resulting in three shared pairs of electrons (single bonds). This allows nitrogen to achieve a stable octet configuration, while each hydrogen atom ...

Nitrogen has a combining capacity of 3, as each nitrogen atom can contribute three electrons to form three shared pairs of electrons, resulting in the formation of a triple bond.

The electronic configuration of nitrogen (atomic number 7) is 1s² 2s² 2p³.