Which statement gives a description of a property of an ammonium ion?
- AAn aqueous ammonium ion is a weak Brønsted-Lowry base.
- BAqueous ammonium sulfate reacts with dilute hydrochloric acid to make ammonia gas.
- CAn ammonium ion has a pyramidal shape with an H-N-H bond angle of $107^{\circ}$.
- DThe four N-H covalent bonds in an ammonium ion are identical to each other.