When ammonia, $\text{NH}_3$, is added to water, only a small amount of ammonium ions, $\text{NH}_4^+$, is produced. Which row is the correct one?
- Anumber of electrons in one ammonium ion: $8$; change of the H-N-H angle: decreases
- Bnumber of electrons in one ammonium ion: $8$; change of the H-N-H angle: increases
- Cnumber of electrons in one ammonium ion: $10$; change of the H-N-H angle: decreases
- Dnumber of electrons in one ammonium ion: $10$; change of the H-N-H angle: increases