Curium vs Berkelium
Side-by-side comparison of Curium (Cm, element 96) and Berkelium (Bk, element 97) by atomic structure and physical properties.
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| Atomic number | 96 | 97 |
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| Symbol | Cm | Bk |
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| Name | Curium | Berkelium |
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| Category | actinide | actinide |
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| Standard Atomic Weight | 247 u | 247 u |
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| Period | 7 | 7 |
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| Group | N/A | N/A |
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| Block | f | f |
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| Phase at STP | Solid | Solid |
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| Electron configuration | [Rn]5f76d17s2 | [Rn]5f97s2 |
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| Oxidation states | [3, 4, 5, 6] | [2, 3, 4, 5] |
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| Electronegativity (Pauling) | 1.3 | 1.3 |
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| Electron affinity | 0.277 eV | -1.72 eV |
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| Density | 1.351e+4 kg/m³ | 1.478e+4 kg/m³ |
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| Melting point | 1344.85 °C | 1049.85 °C |
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| Boiling point | 3126.85 °C | N/A |
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| Discovery year | 1944 | 1949 |
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Key Differences
| Cm Curium | Bk Berkelium |
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| Density | 1.351e+4 kg/m³ ↓ lower | 1.478e+4 kg/m³ ↑ higher |
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| Melting point | 1344.85 °C ↑ higher | 1049.85 °C ↓ lower |
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| Electron affinity | 0.277 eV ↑ higher | -1.72 eV ↓ lower |
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| Electron configuration | [Rn]5f76d17s2 | [Rn]5f97s2 |
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| Discovery year | 1944 | 1949 |
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