The ammonium ion is produced by the reaction shown below. $\text{NH}_3 + \text{H}^+ \rightarrow \text{NH}_4^+$ Which of the following statements about the species taking part in this reaction is correct?
- AThe ammonia molecule contains a dative covalent bond.
- BThe ammonium ion is a Brønsted-Lowry base as it has accepted a proton.
- CThe H-N-H bond angle changes from $107^\circ$ in ammonia to $90^\circ$ in the ammonium ion.
- DThe number of electrons surrounding each nitrogen atom does not change.