Periodic Table
|
| Thulium |
|
|
| Symbol: |
Tm
|
| Atomic
Number: |
69
|
| Atomicmass: |
168.93 g.mol -1
|
| Electronegative
(According to Pauling): |
1.2
|
| Density: |
9.3 g.cm-3 at 20°C
|
| Melting
Point: |
1545 °C
|
| Boiling
Point: |
1947 °C
|
| Venderwaals
Radious: |
unknown
|
| Ionic
Radious: |
unknown
|
| Isotopes: |
5
|
| Electronic
Shell: |
[ Xe ] 4f13 6s2 |
|
| Energy
Of First Ionisation: |
595.3 kJ.mol -1
|
|
No of Protons |
| Standard
Potential: |
- 2.28 V
|
|
Electorn
in Full Shell |
| Discoverd
By: |
Discovered by Theodore Cleve in 1879 |
|
Electorn
in Partial Shell |
| |
|
|
|
| |
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