Which species is the conjugate base of an ammonium ion, NH4+?

The conjugated base of ammonium ion is

Explanation:

A conjugate base is obtained by addition of proton . In order to get the conjugate base of , we need to add a proton to ammonium ion. We will get after addition of proton to ammonium ion.

Hence, the conjugate base of is

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.