In Which Compound Does Phosphorus Have an Oxidation Number of 3

question 10

Multiple Choice

In which compound does phosphorus have an oxidation number of 3+?

• A)AlPO₄
• B)PF₅
• C)H₃PO₄
• D)H₃PO₃
• E)PH₃

---

Definitions:

OPEC Member

A country that is part of the Organization of the Petroleum Exporting Countries, a group that coordinates and unifies petroleum policies among member countries.

Saudi Arabia

A country in the Middle East known for its vast oil reserves, which play a significant role in the global energy market and its economy.

Norway

A Northern European country known for its high standard of living, extensive natural resources, and robust welfare system.

Competitive Spectrum

The range of competition levels across different markets or industries, highlighting the variations from monopolies to perfectly competitive markets.