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Ra
Radium
#88 · Alkaline Earth Metal
| I-Mass | 226.02541 u |
| Uxinano | 5.5 g/cm³ |
| Uthuthu | 973.0 K |
| Ukomisa | 2010.0 K |
| Electronegativity | 0.9 |
| Ionization energy | 509.3 kJ/mol |
| Atomic radius: | 221.0 pm |
| I-Block | s- iblock |
| Ilizwe (RT) | I-Solid |
| Qwalasela | [Rn] 7s2 |