# How many bonding electrons are there in the ammonia molecule?

How many $N - H$ bonds are in the ammonia molecule?
Well, clearly, there are $3 \times N - H$ bonds. Since each $N - H$ bond is made up of 2 electrons, one from the hydrogen, and one from the nitrogen, there are 3 such bonding pairs.
How many bonded pairs of electrons in the $N {H}_{4}^{+}$ ion?