General Knowledge - Chemistry - Discussion

A coordinate covalent bond is one where both bonding electrons are from one of the atoms involved in the bond. These bonds give rise to Lewis acids and bases. The electrons are shared roughly equally between the atoms in contrast to ionic bonding.

Such bonding occurs in molecules such as the ammonium ion (NH4+) and are shown by an arrow pointing to the Lewis acid. Also known as non-polar covalent bond, the electronegativity of these bonds range from 0 to 0.3.

The covalency of nitrogen is 4 i.e.it forms 3 normal covalent bonds and a co-ordinate covalent bond.

Since valency if N is 3 so it should be 3.

N can form only 3 covalent bonds and the 4th bond that it forms is the co-ordinate covalent bond not covalent. So the right answer is 3.

N can form 3 covalent bond, e.g. NH3 and 1 co-ordinate covalent bond e.g. NH4+, which is a type of covalent bond. So the answer is D.

NH4+ is formed.

There should be carbon in place of nitrogen.

It can make coordinate bond that is bond made by donating lone pair.

Nitrogen shows maximum 3-5 co valency so maximum 4.

Because Nitrogen can expands its p electron in vacant d-orbit.