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Atomic Number	96

Atomic Symbol	Cm

Atomic Weight	[247 amu]

Group	Rare Earth (Actinide Series)

Form	Solid

Density @ STP	13.51 g/cm³

Melting Point	1345 °C (2453 °F, 1618.15 °K)

Boiling Point	3100 °C (5612 °F, 3373.15 °K) (all approx.)

First Ionization Potential	6.02 eV

Ground State Electron Configuration	5f⁷ 6s² 6p⁶ 6d¹ 6f²

Oxidation State(s)	+3

Selected Radioisotopes	²⁴⁴Cm

Crystal Structure	Hexagonal

Discovered by	Seaborg; James; Ghiorso, 1944