1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Transition Metal
Actinide
1.6 CAS Number
74405867440611
7429905
54386242
1.8 Space Group Name
1.9 Space Group Number
3 Facts
3.1 Interesting Facts
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
3.2 Sources
By-product Zirconium Refining
Earth's crust, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Dirk Coster and George de Hevesy
Not Available
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
7 * 10-8 %2 * 10-8 %
5E-09
0.11
3.5.1 Abundance In Sun
~0.0000001 %~0.0000001 %
1E-08
0.1
4.2.4 Abundance In Meteorites
4.2.8 Abundance In Earth's Crust
4.3.3 Abundance In Oceans
4.3.4 Abundance In Humans
6 Uses
6.1 Uses & Benefits
- It has an ability to absorb neutrons and hence it is used to make control rods in nuclear submarines. And this metal is also used in Plasma welding torches.
-
It alloys with iron, titanium and niobium are very useful.
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
-
Synthetic elements like transuranium are made from Uranium metal.
6.1.1 Industrial Uses
Ammunition Industry
Ammunition Industry, Chemical Industry
6.1.2 Medical Uses
6.1.3 Other Uses
Alloys, In Nuclear Reactors, Nuclear Research, Research Purposes
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
6.2 Biological Properties
6.2.1 Toxicity
6.2.2 Present in Human Body
6.2.3 In Blood
6.4.1 In Bone
7 Physical
7.1 Melting Point
2,150.00 °C1,132.00 °C
27
3410
8.3 Boiling Point
5,400.00 °C3,818.00 °C
147
5660
8.5 Appearance
8.5.1 Physical State
8.5.3 Color
8.5.4 Luster
8.6 Hardness
8.6.1 Mohs Hardness
8.8.1 Brinell Hardness
1,450.00 MPa2,350.00 MPa
0.14
3490
8.9.1 Vickers Hardness
1,520.00 MPa1,960.00 MPa
121
3430
8.10 Speed of Sound
3,010.00 m/s3,155.00 m/s
818
16200
8.12 Optical Properties
8.12.1 Refractive Index
8.13.2 Reflectivity
8.14 Allotropes
8.14.1 α Allotropes
Not Available
Not Available
8.14.2 β Allotropes
Not Available
Not Available
8.14.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
9.2 Isotopes
9.2.1 Known Isotopes
9.3 Electronegativity
9.3.1 Pauling Electronegativity
9.3.3 Sanderson Electronegativity
9.3.4 Allred Rochow Electronegativity
9.4.1 Mulliken-Jaffe Electronegativity
9.4.2 Allen Electronegativity
9.5 Electropositivity
9.5.1 Pauling Electropositivity
9.6 Ionization Energies
9.6.1 1st Energy Level
658.50 kJ/mol597.60 kJ/mol
375.7
26130
9.6.2 2nd Energy Level
1,440.00 kJ/mol1,420.00 kJ/mol
710.2162
28750
9.6.3 3rd Energy Level
2,250.00 kJ/mol1,900.00 kJ/mol
1600
34230
9.6.4 4th Energy Level
3,216.00 kJ/mol3,145.00 kJ/mol
2780
37066
9.6.5 5th Energy Level
9.6.6 6th Energy Level
9.6.7 7th Energy level
9.6.8 8th Energy Level
9.6.9 9th Energy Level
9.6.10 10th Energy Level
9.6.11 11th Energy Level
9.6.12 12th Energy Level
9.6.13 13th Energy Level
9.6.14 14th Energy Level
9.6.15 15th Energy Level
9.6.16 16th Energy Level
9.6.17 17th Energy Level
9.6.18 18th Energy Level
9.6.19 19th Energy Level
9.6.20 20th Energy Level
9.6.21 21st Energy Level
9.6.22 22nd Energy Level
9.6.23 23rd Energy Level
9.6.24 24th Energy Level
9.6.25 25th Energy Level
9.6.26 26th Energy Level
9.6.27 27th Energy Level
9.6.28 28th Energy Level
9.6.29 29th Energy Level
9.6.30 30th Energy Level
9.7 Electrochemical Equivalent
1.66 g/amp-hr1.48 g/amp-hr
0.16812
8.3209
9.8 Electron Work Function
9.9 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Xe] 4f14 5d2 6s2
[Rn] 5f3 6d1 7s2
10.3 Crystal Structure
Hexagonal Close Packed (HCP)
Orthorhombic (ORTH)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.2 Number of Neutrons
10.4.3 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
159.00 pm156.00 pm
112
265
10.5.2 Covalent Radius
175.00 pm196.00 pm
96
260
10.5.3 Van der Waals Radius
200.00 pm186.00 pm
139
348
10.6 Atomic Weight
178.49 amu238.03 amu
6.94
294
10.7 Atomic Volume
13.60 cm3/mol12.59 cm3/mol
1.39
71.07
10.8 Adjacent Atomic Numbers
10.8.1 Previous Element
10.8.2 Next Element
10.9 Valence Electron Potential
81.00 (-eV)170.00 (-eV)
8
392.42
10.10 Lattice Constant
319.64 pm295.08 pm
228.58
891.25
10.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
10.12 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
13.31 g/cm319.10 g/cm3
0.534
40.7
11.1.2 Density When Liquid (at m.p.)
12.00 g/cm317.30 g/cm3
0.512
20
11.2 Tensile Strength
11.3 Viscosity
11.4 Vapor Pressure
11.4.1 Vapor Pressure at 1000 K
11.4.2 Vapor Pressure at 2000 K
0.00 (Pa)0.01 (Pa)
2.62E-10
774
11.5 Elasticity properties
11.5.1 Shear Modulus
30.00 GPa111.00 GPa
1.3
222
11.5.2 Bulk Modulus
110.00 GPa100.00 GPa
1.6
462
11.5.3 Young's Modulus
78.00 GPa208.00 GPa
1.7
528
11.6 Poisson Ratio
11.7 Other Mechanical Properties
Ductile, Malleable
Ductile, Malleable
12 Magnetic
12.1 Magnetic Characteristics
12.1.1 Specific Gravity
12.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
12.1.3 Permeability
12.1.4 Susceptibility
12.2 Electrical Properties
12.2.1 Electrical Property
12.2.2 Resistivity
331.00 nΩ·m0.28 nΩ·m
0.18
961
12.2.3 Electrical Conductivity
0.03 106/cm Ω0.04 106/cm Ω
0.00666
0.63
12.2.4 Electron Affinity
13 Thermal
13.1 Specific Heat
0.14 J/(kg K)0.12 J/(kg K)
0.11
3.6
13.2 Molar Heat Capacity
25.73 J/mol·K27.67 J/mol·K
16.443
62.7
13.3 Thermal Conductivity
23.00 W/m·K27.50 W/m·K
6.3
429
13.4 Critical Temperature
13.5 Thermal Expansion
5.90 µm/(m·K)13.90 µm/(m·K)
4.5
97
13.6 Enthalpy
13.6.1 Enthalpy of Vaporization
661.10 kJ/mol477.00 kJ/mol
7.32
799.1
13.6.2 Enthalpy of Fusion
25.10 kJ/mol15.48 kJ/mol
2.1
35.23
13.6.3 Enthalpy of Atomization
703.00 kJ/mol489.50 kJ/mol
61.5
837
13.7 Standard Molar Entropy
43.60 J/mol.K50.20 J/mol.K
9.5
198.1