Periodic Table
|
| Astatine |
|
|
| Symbol: |
At
|
| Atomic
Number: |
85
|
| Atomicmass: |
(210) g.mol -1
|
| Electronegative
(According to Pauling): |
2.2
|
| Density: |
unknown
|
| Melting
Point: |
302 °C
|
| Boiling
Point: |
337 °C (estimation)
|
| Venderwaals
Radious: |
unknow
|
| Ionic
Radious: |
nunknown
|
| Isotopes: |
7
|
| Electronic
Shell: |
[ Xe ] 4f14 5d10 6s2 6p5 |
|
| Energy
Of First Ionisation: |
926 kJ.mol -1
|
|
No of Protons |
| Standard
Potential: |
|
|
Electorn
in Full Shell |
| Discoverd
By: |
Discovered by D.R.Corson in 1940 |
|
Electorn
in Partial Shell |
| |
|
|
|
| |
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