Periodic Table
|
| Radium |
|
|
| Symbol: |
Ra
|
| Atomic
Number: |
88
|
| Atomicmass: |
226.0254 g.mol -1
|
| Electronegative
(According to Pauling): |
0.9
|
| Density: |
5 g.cm-3 at 20°C
|
| Melting
Point: |
700 °C
|
| Boiling
Point: |
1140 °C
|
| Venderwaals
Radius: |
0.230 nm
|
| Ionic
Radius: |
unknown
|
| Isotopes: |
6
|
| Electronic
Shell: |
[ Rn ] 7s2 |
|
| Energy
Of First Ionization: |
509.1 kJ.mol -1
|
|
No of Protons |
| Standard
Potential: |
|
|
Electron
in Full Shell |
| Discoverd
By: |
Discovered by Pierre and Marie Curie in 1898 |
|
Electron
in Partial Shell |
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