Ammonia reacts with acids to produce the ammonium ion. $\text{NH}_3 + \text{H}^+ \rightleftharpoons \text{NH}_4^+$ Which row is the correct one?
- Ashape of $\text{NH}_4^+$ pyramidal; bond angle $107^\circ$
- Bshape of $\text{NH}_4^+$ pyramidal; bond angle $109.5^\circ$
- Cshape of $\text{NH}_4^+$ tetrahedral; bond angle $107^\circ$
- Dshape of $\text{NH}_4^+$ tetrahedral; bond angle $109.5^\circ$