5
QuizMultiple Choice

Compounds

Question 5 • AA-F26 Physical Science

How many atoms of each element are in the chemical formula P2O5?

Answer
A
2 phosphorus and 5 oxygen
B
5 phosphorus and 2 oxygen
C
1 phosphorus and 5 oxygen
D
2 phosphorus and 1 oxygen

Explanation

In P₂O₅, the small number after each element symbol tells how many atoms of that element are present. The subscript 2 means 2 phosphorus atoms, and the subscript 5 means 5 oxygen atoms. Therefore, the correct choice is 2 phosphorus and 5 oxygen.

AI-written and checked against the verified answer.

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