Question

Which feature of ammonia leads to the formation of ammonium ion when dissolved in water?

• A. Presence of lone pair of electrons on N-atom which attracts the $\left(O{H}^{-}\right)$ ion from the water.
• B. Presence of lone pair of electrons on N-atom which attracts the $H^{+}$ ion from the water.
• C. Presence of lone pair of electrons on H-atom which attracts the $\left(O{H}^{-}\right)$ ion from the water.
• D. Presence of lone pair of electrons on H-atom which attracts the $H^{+}$ ion from the water.

Answer 1

The correct option is B

Presence of lone pair of electrons on N-atom which attracts the $H^{+}$ ion from the water.

Ammonia molecule has a lone pair of electrons present on N-atom, which attracts the $H^{+}$ ion from the water. Hence, it forms ammonium ion.

Hydroxyl ion $\left(O{H}^{-}\right)$.