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mineralogy elements Hf Hafnium

Hf - Hafnium - TRANSITION METAL

2150°
5400°
178.49
2
3
4
72
Hf
[Xe] 4f14 5d2 6s2
2
8
18
32
10
2
1.3
6.8251
Synthetic
Radioactive
Liquid
Gaseous
Hafnium Electronic configuration diagram
Electronic configuration diagram

Name Hafnium
Number 72
Atomic 178.49
Symbol Hf
Fusion 2150
Boiling 5400
Density 13.31
Period 6
Group 4
Discovery 1923 Coster and von Hevesy
Abundance 3
Radius 2.2
Electronegativity 1.3
Ionization 6.8251
Number of isotopes 17
Electronic configuration [Xe] 4f14 5d2 6s2
Oxidation states 2,3,4
Electron by energy level 2,8,18,32,10,2

Mineral Hardness Density
Allendeite 4.84
Bobtraillite 5.50 / 5.50 3.16
Dovyrenite 3.00 / 4.00 3.03
Feklichevite 5.50 / 5.50 2.87
Ferrokentbrooksite 5.00 / 6.00 3.06
Georgbarsanovite 5.00 / 5.00 3.05
Hafnon 7.50 / 7.50 6.97
Ikranite 5.00 / 5.00 2.82
Johnsenite-(Ce) 5.00 / 6.00 3.20
Kochite 5.00 / 5.00 3.32
Lakargiite 8.00 / 8.50 4.59
Marianoite 6.00 / 6.00 3.32
Taseqite 5.50 / 5.50 3.24
Voronkovite 5.00 / 5.00 2.97
Zircon 7.50 / 7.50 4.60