Periodic Table
|
| Erbium |
|
|
| Symbol: |
Er
|
| Atomic
Number: |
68
|
| Atomicmass: |
167.26 g.mol -1
|
| Electronegative
(According to Pauling): |
1.2
|
| Density: |
9.2 g.cm-3 at 20°C
|
| Melting
Point: |
1522 °C
|
| Boiling
Point: |
2510 °C
|
| Venderwaals
Radius: |
unknown
|
| Ionic
Radius: |
unknown
|
| Isotopes: |
9
|
| Electronic
Shell: |
[ Xe ] 4f12 6s2 |
|
| Energy
Of First Ionization: |
587.6 kJ.mol -1
|
|
No of Protons |
| Standard
Potential: |
- 2.30 V
|
|
Electron
in Full Shell |
| Discoverd
By: |
Discovered by Carl Mosander in 1843 |
|
Electron
in Partial Shell |
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