Which two elements were discovered by Pierre and Marie Curie?

• A. Francium and radon
• B. Polonium and radium
• C. Cesium and rubidium
• D. Platinum and palladium

Answer: (B)

Verified step by step guidance

1. Understand that the question asks about the elements discovered by Pierre and Marie Curie, who were famous chemists and physicists known for their work on radioactivity.
2. Recall that the Curies discovered two radioactive elements while studying uranium ores: one named after Marie Curie's homeland (Poland) and the other named for its radioactive properties.
3. Identify that the element named after Poland is Polonium (Po), and the other element discovered by them is Radium (Ra).
4. Recognize that Francium and radon, cesium and rubidium, and platinum and palladium were discovered by other scientists and are not associated with the Curies.
5. Conclude that the two elements discovered by Pierre and Marie Curie are Polonium and Radium.