Question

A co-ordinate bond is formed when atom in a molecule has:

• A. all its valency shell electrons shared
• B. a single unshared electron
• C. one or more unshared electron pair
• D. electric charge on it

Answer 1

The correct option is C one or more unshared electron pair

A co-ordinate or dative bond is a covalent bond(a shared pair of electrons) in which both the electrons come from the same atom. It is shown by an arrow and the arrow points from atom donating the lone pair to accepting atom.$H|H-N^{+}\to H|H$