Periodic Table
|
| Hafnium |
|
|
| Symbol: |
Hf
|
| Atomic
Number: |
72
|
| Atomicmass: |
178.49 g.mol -1
|
| Electronegative
(According to Pauling): |
1.3
|
| Density: |
13.07 g.cm-3 at 20°C
|
| Melting
Point: |
2200 °C
|
| Boiling
Point: |
5200 °C
|
| Venderwaals
Radius: |
0.161 nm
|
| Ionic
Radius: |
0.075 nm
|
| Isotopes: |
10
|
| Electronic
Shell: |
[ Xe ] 4f14 5d2 6s2 |
|
| Energy
Of First Ionization: |
530 kJ.mol -1
|
|
No of Protons |
| Standard
Potential: |
- 1.68 V ( HfO2+/ Hf )
|
|
Electron
in Full Shell |
| Discoverd
By: |
Discovered by Dirk Coster in 1923 |
|
Electron
in Partial Shell |
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