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Elektronische Daten | Thermische Daten | Sterische Daten | ||
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Schalen: 2,8,18,32,25,9,2 Orbitale: [Rn] 5f7 6d1 7s2 Elektronegativität: 1.2, -- 1. Ionization potential: 6.02 eV 2. Ionization potential: -- eV 3. Ionization potential: -- eV Oxidation states: 4,3 Electrical conductivity: -- |
Melting point: 1340 °C Boiling point: -- °C Specific heat: -- J/gK Heat of fusion: 15.0 kJ/mol Heat of vaporization: -- kJ/mol Thermal conductivity: 0.1 W/cmK |
Atomic radius: -- Å Ionic radius: -- Å () Covalent radius: -- Å Atomic volume: 18.28 cm³/mol Density (293 K): 13.5 g/cm³ Crystal structure: Hexagonal |
| Legende Taschenrechner |
| Nuklid | Häufigkeit [%] | Masse | Spin | Halbwertszeit | Zerfallsmodus | Zerfallsreihe |
| 241Cm | 0 | 241 | 1/2 | 32.8d | EC, | View |
| 242Cm | 0 | 242.059 | 0 | 162.8d | View | |
| 243Cm | 0 | 243.061 | 5/2 | 29.1y | View | |
| 244Cm | 0 | 244.063 | 0 | 18.1y | View | |
| 245Cm | 0 | 245.066 | 7/2 | 8.5E03y | View | |
| 246Cm | 0 | 246.067 | 0 | 4.76E03y | View | |
| 247Cm | 0 | 247.07 | 9/2 | 1.56E07y | View | |
| 248Cm | 0 | 248.072 | 0 | 3.48E05y | View | |
| 249Cm | 0 | 249 | 1/2 | 1.069h | View | |
| 250Cm | 0 | 250 | 0 | ~9.7E03y | SF | View |
| Legende |
| Herkunft des Namen: | Benannt nach Pierre und Marie Curie. |
| Beschreibung: | Silvery, malleable, synthetic radioactive metal. |
| Entdeckt von: | G.T.Seaborg, R.A.James, A.Ghiorso |
| Jahr: | 1944 |
| Ort: | USA |
| Quelle(n): | Made by bombarding plutonium with helium ions. So radioactive it glows in the dark. |
| Verwendung(en): | Keine signifikante kommerzielle Nutzung. |
| © 2000 Information | Fehlermeldung schicken | ChemGlobe |