Question

\(NH_3\) molecule attract \(H^+\) ion towards itself to form ammonium ion \({NH}_4^+\) through:

• A. electrovalent bond
• B. metallic bond
• C. co-ordinate bond
• D. hydrogen bonding

Hint:

A co-ordinate bond is formed when one atom provides both electrons in the bond, typically seen in the interaction between ammonia and hydrogen ion.

Answer 1

The Correct Option is C

In the formation of the ammonium ion (\( \text{NH}_4^+ \)), the nitrogen atom in \( \text{NH}_3 \) shares its lone pair of electrons with a hydrogen ion (H\(^+\)), which does not have any electrons.
This forms a co-ordinate (dative) bond.
In this bond, both electrons are provided by the nitrogen atom of the ammonia molecule, making it a co-ordinate bond.

Thus, the correct answer is (c).