96

Curio – CuriumMass: (247) u1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10

5p6 6s2 4f14 5d10 6p6 7s2 5f8

Melting point: 1613 K Boiling point: 3383 KDensity: 13.5 g/cm3

Discovery: Seaborg, James & Ghiorso (1944) Curium is a radioactive chemical element with the symbol Cm and

the atomic number 96. Most Curium is produced by bombarding Uranium or Plutonium with neutrons in nuclear reactors, one tonne of spent nuclear fuel contains about 20 grams of Curium. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide.