7
AssignmentMultiple Choice

Types of Chemical Bonds

Question 7 • ISA CA-Chemistry A

What is the IUPAC name for NH3?

Answer
A
ammonia
B
mononitrogen hydride
C
mononitrogen trihydride
D
nitrogen trihydride

Explanation

NH₃ is a molecular compound made of nitrogen and hydrogen. In naming binary molecular compounds, the first element keeps its element name, and the second uses a prefix for the number of atoms plus the ending “-ide.” Three hydrogen atoms are indicated by “tri-,” so the name is nitrogen trihydride.

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