13.51
247
[Rn] 5f76d17s2
243Cm, 248Cm
7
f
96
2, 8, 18, 32, 25, 9, 2
578.082
Cm
13.51
1345°C, 2453°F, 1618 K
Unknown
Glenn Seaborg and colleagues
1944
7440-51-9
22415
More Information
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Atomic Data

Atomic Radiues, Non-bonded (A): 2.450
Electron Affinity (kJ mol-1): Unknown
Covalent Radiues (A): 1.68
Electronegativity (Pauling Scale): Unknown
Ionisation Energies (kJ mol-1) 1st 2nd 3rd 4th 5th 6th 7th 8th
578.082 - - - - - - -

Oxidation States and Isotopes

Common oxidation states 1
Isotope Atomic Mass Natural Abundance Half Life Mode of Decay
243Cm 243.061 - 29.1 y α
5.5 x 1011 y sf
244Cm 244.063 - 18.1 y α
1.32 x 107 y sf
245Cm 245.065 - 8.48 x 103 y α
1.4 x 1012 y sf
246Cm 246.067 - 4.76 x 103 y α
1.8 x 107 y sf
247Cm 247.070 - 1.56 x 107 y α
248Cm 248.072 - 3.48 x 105 y α
 

Pressure and Temperature Data

Specific Heat Capacity: Unknown
Shear Modulus: Unknown
Young Modulus: Unknown
Bulk Modulus: Unknown
Pressure 400k Pressure 600k Pressure 800k Pressure 1000k Pressure 1200k Pressure 1400k Pressure 1600k Pressure 1800k Pressure 2000k Pressure 2200k Pressure 2400k
- - - 1.90 x 10-9 4.24 x 10-6 0.00103 0.0629 1.17 12.1 82.1 Unknown