Question

which choice is not an example of a molecule?
o ncl₃
o o₃
o f
o h₂o₂

Explanation:

A molecule is formed by two or more atoms chemically bonded together. $NCl_3$ has one nitrogen and three chlorine atoms bonded, $O_3$ has three oxygen - atoms bonded, and $H_2O_2$ has two hydrogen and two oxygen atoms bonded. Fluorine ($F$) is a single atom and not a molecule.

Answer:

F