1. Chemical Formula:
The chemical formula for barium nitrate is Ba(NO₃)₂.
2. Subscripts:
* Ba: There is one barium atom (no subscript).
* N: There are two nitrogen atoms (subscript 2 outside the parentheses).
* O: There are six oxygen atoms (subscript 3 within the parentheses multiplied by the subscript 2 outside).
3. Total Oxygen Atoms:
Therefore, there are six oxygen atoms in a formula unit of barium nitrate.
