polonium

Polonium is a chemical element with the symbol Po and atomic number 84. It is a rare, highly radioactive metal that is found in nature in very small amounts. Polonium is a silvery-white metal that is soft and easily vaporised. It is also very toxic, even in small amounts.

Polonium was discovered in 1898 by Marie Curie and Pierre Curie. They were studying the radioactive decay of uranium when they found polonium. Polonium is named after Marie Curie's native country, Poland.

Polonium is used in some medical applications, such as cancer treatment. However, it is also used in nuclear weapons. Polonium is a very effective poison, and it has been used in assassinations.

Polonium is a highly radioactive element.