Cm

Curium (Atomic Number 96)

Category: actinide | Period 7, Group 3 | Block: f

Hard, dense synthetic radioactive metal glowing in the dark.

Atomic & Physical Constants

Standard Atomic Weight:
247 u
Standard State Phase:
Synthetic
Electron Configuration:
2, 8, 18, 32, 25, 9, 2
Electronegativity (Pauling):
1.28
Melting Point:
1613 K
Boiling Point:
3383 K

Historical Discovery & Real-World Applications

Industrial & Scientific Uses

Mars rover Alpha Particle X-ray Spectrometers (APXS)

Discovery History

Discovered by Glenn T. Seaborg (1944).

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