Final answer:
The systematic name for NH₃ is nitrogen trihydride, but NH₂ as part of an organic compound is an amino group.
Step-by-step explanation:
The student has asked for the systematic name for the compound with the formula NH₂. This is an incomplete formula, as it seems to be missing a hydrogen atom. The complete molecule would be NH₃, which is commonly known as ammonia. However, if we were to follow systematic nomenclature for inorganic compounds, NH₃ is called nitrogen trihydride. In organic chemistry, such as an amino group without the additional hydrogen, the NH₂ group is known as an amine, specifically an amino group when part of a larger organic molecule.