Question

During a coordinate bond formation:

• A. one electron from an atom is transferred to other
• B. one electron each is lost from both the atoms
• C. a pair of electrons Is contributed by one atom and shared by both the atoms
• D. a pair of electrons is transferred to the other atom.

Answer 1

The correct option is C a pair of electrons Is contributed by one atom and shared by both the atoms

Coordinate bond: Coordinate bond or dative bond is a kind of $2$ center $2$ electron bond in which the two electrons are derived from the same atom and shared by both atoms.

For example : Formation of $N{H_4}^{+}$ from $N{H}_3$.

Here both electrons are derived from the nitrogen atom and shared by both nitrogen and hydrogen atom.