1. 96
Curio – Curium
Mass: (247) u
1s2
2s2
2p6
3s2
3p6
4s2
3d10
4p6
5s2
4d10
5p6
6s2
4f14
5d10
6p6
7s2
5f8
Melting point: 1613 K
Boiling point: 3383 K
Density: 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.