Americium

**Definition:** A completely man-made radioactive actinide with atomic symbol Am, and atomic number 95. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.

**Tree numbers:** - D01.268.271.100.050 - D01.268.556.037 - D01.496.749.305.100.050 - D01.552.020.086 - D01.552.544.037