Which statement describes a property of an ammonium ion?
1 )
An aqueous ammonium ion is a weak Brønsted–Lowry base.
2 )
Aqueous ammonium sulfate reacts with dilute hydrochloric acid to make ammonia gas.
3 )
An ammonium ion has a pyramidal shape with an H–N–H bond angle of 107$^\circ$.
The four N–H covalent bonds in an ammonium ion are identical to each other.
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