Question

The coordinate covalent bond differs from covalent bond in:

• A. The covalent nature
• B. The overlapping of orbitals
• C. The donation or sharing in electrons
• D. All of the above

Answer 1

The correct option is C The donation or sharing in electrons

In a coordinate bond both the electrons in the bonded pair comes from a single atom whereas, in a covalent bond, electrons are mutually shared by both the atoms.
Once formed, the coordinate bond and covalent bond have similar properties. It is impossible to differentiate coordinate covalent and covalent bond in $N{H}_4^{+}$.
However, the fourth bond is formed by the donation of lone pair of $N$ to $H^{+}$.