Question

Which one is the correct representation of $NH_{4}^{+}$ ion?

• A. $\left(H - \underset{\overset{|}{H}}{\overset{\underset{|}{H}}{N}} \to H \right)^+$
• B. $\left(H - \underset{\overset{|}{N}}{\overset{\underset{|}{H}}{N}} \leftarrow H \right)^+$
• C. $\left(H \rightarrow \underset{\overset{\uparrow}{H}}{\overset{\underset{\downarrow}{H}}{N}} - H \right)^+$
• D. $\left(H \leftarrow \underset{\overset{\downarrow}{H}}{\overset{\underset{\uparrow}{H}}{H}} \rightarrow H \right)^+$

Answer 1

Answer: (A)

$\left(H - \underset{\overset{|}{H}}{\overset{\underset{|}{H}}{N}} \to H \right)^+$

Answer 2

The correct representation of $NH _{4}^{+}$ion is $\left(H - \underset{\overset{|}{H}}{\overset{\underset{|}{H}}{N}} \to H \right)^+$ This is because nitrogen $\left( NH _{3}\right)$ contains a lone pair of electron and donates it to $H ^{+}$ion through coordinate bond.