Question

how many atoms of phosphorus (p) are in the compound: *

1 atom
2 atoms
3 atoms
4 atoms

Explanation:

Step1: Analyze the chemical formula

In the formula \(P_2O_3\), the subscript next to \(P\) (phosphorus) is 2.

Step2: Interpret the subscript

The subscript indicates the number of atoms of that element in one molecule of the compound. So, there are 2 phosphorus atoms.

Answer:

B. 2 atoms