To determine the number of oxygen atoms in one molecule of carbon dioxide, we need to consider its chemical formula, which is [tex]\( CO_2 \)[/tex].
The chemical formula [tex]\( CO_2 \)[/tex] indicates that one molecule of carbon dioxide is composed of:
- 1 atom of carbon (C)
- 2 atoms of oxygen (O_2)
Therefore, in one molecule of carbon dioxide, there are 2 atoms of oxygen.
So, the correct answer is:
2.
