General Knowledge - Chemistry - Discussion

Nitrogen is a trivalent compound. Carbon is a tetravalent compound so it can only share electrons.

Nitrogen is trivalent. How its valency could be 4 ?

Nitroren is trivalent comp. Its valency is 3.

For example, let's take ammonia (NH3), which has one unshared pair.


If it is placed in an acidic solution (a proton donator), H+ ions (protons), the ammonia takes in the proton and becomes NH4+, an ammonium ion. The H+ ion has a vacant 1s orbital in its valence shell and can accomodate two electrons. The two unshared pair of electrons in the ammonia can be donated to the H+.


An arrow from the nitrogen atom to the hydrogen ion indicates that the nitrogen is sharing it pair of electrons with it. This sharing is called an coordinate covalent bond.

Nitrogen form three covelent bond and one co-ordinate bond.

There is a posibility of having the four bonds =N= in this it is having positive charge.

Nitrogen belongs to the 15th group element so its valence is 3 and it reach the octet configuration gains 3 electrons from other atom or element. How is possible 4.

How it could be 4?

The valency of nitrogen is 3 that means its electron affinity is 3, so it can form 3 covalent bonds with other element then how it is 4 ?

Covalent sigma bond is also called coordinate bond. So there is also possibility of nitrogen to form 4 covalent bond. We can say nitrogen having 4 covalent bond.