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Hafnium
Hafnium
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What is Hafnium?
Hafnium Metal Hafnium Electron Configuration Hafnium Crystal Structure
Hafnium
Add ⊕
1 Periodic Table
1.1 Symbol
Hf
1.2 Group Number
Tennessine
⊕
▶
▼
4
Rank: 14 (Overall)▶
▲
Gadolinium
⊕
▶
◀ ▶ ADD ⊕
1.3 Period Number
Uranium
⊕
▶
▼
6
Rank: 2 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
1.4 Block
d block
1.5 Element Family
Transition Metal
1.6 CAS Number
Roentgenium
⊕
▶
▼
7440586
Rank: 30 (Overall)▶
▲
Aluminium
⊕
▶
◀ ▶ ADD ⊕
1.7 Space Group Name
P63/mmc
1.8 Space Group Number
Sodium
⊕
▶
▼
194.00
Rank: 5 (Overall)▶
▲
Plutonium
⊕
▶
◀ ▶ ADD ⊕
2 Facts
2.1 Interesting Facts
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
2.2 Sources
By-product Zirconium Refining
2.3 History
2.3.1 Who Discovered
Dirk Coster and George de Hevesy
2.3.2 Discovery
In 1922
2.4 Abundance
2.4.1 Abundance In Universe
Iron
⊕
▶
▼
7 * 10-8 %
Rank: 25 (Overall)▶
▲
Thallium
⊕
▶
◀ ▶ ADD ⊕
2.4.2 Abundance In Sun
Iron
⊕
▶
▼
~0.0000001 %
Rank: 26 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
2.4.3 Abundance In Meteorites
Iron
⊕
▶
▼
0.00 %
Rank: 37 (Overall)▶
▲
Gold
⊕
▶
◀ ▶ ADD ⊕
2.4.4 Abundance In Earth's Crust
Aluminium
⊕
▶
▼
0.00 %
Rank: 31 (Overall)▶
▲
Radium
⊕
▶
◀ ▶ ADD ⊕
2.4.5 Abundance In Oceans
Sodium
⊕
▶
▼
0.00 %
Rank: 27 (Overall)▶
▲
Protactinium
⊕
▶
◀ ▶ ADD ⊕
2.4.6 Abundance In Humans
Calcium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Radium
⊕
▶
◀ ▶ ADD ⊕
3 Uses
3.1 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.
3.1.1 Industrial Uses
Ammunition Industry
3.1.2 Medical Uses
NA
3.1.3 Other Uses
Alloys, In Nuclear Reactors, Nuclear Research, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Toxic
3.2.2 Present in Human Body
✔ ✘
60% Transition Metals Metals have it !
3.2.3 In Blood
Sodium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Plutonium
⊕
▶
◀ ▶ ADD ⊕
3.2.4 In Bone
Calcium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Plutonium
⊕
▶
◀ ▶ ADD ⊕
4 Physical
4.1 Melting Point
Tungsten
⊕
▶
▼
2,150.00 °C
Rank: 10 (Overall)▶
▲
Francium
⊕
▶
◀ ▶ ADD ⊕
4.2 Boiling Point
Tungsten
⊕
▶
▼
5,400.00 °C
Rank: 5 (Overall)▶
▲
Flerovium
⊕
▶
◀ ▶ ADD ⊕
4.3 Appearance
4.3.1 Physical State
Solid
4.3.2 Color
Gray
4.3.3 Luster
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
⊕
▶
▼
5.50
Rank: 7 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
4.4.2 Brinell Hardness
Osmium
⊕
▶
▼
1,450.00 MPa
Rank: 6 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
4.4.3 Vickers Hardness
Tungsten
⊕
▶
▼
1,520.00 MPa
Rank: 5 (Overall)▶
▲
Palladium
⊕
▶
◀ ▶ ADD ⊕
4.5 Speed of Sound
Technetium
⊕
▶
▼
3,010.00 m/s
Rank: 27 (Overall)▶
▲
Thallium
⊕
▶
◀ ▶ ADD ⊕
4.6 Optical Properties
4.6.1 Refractive Index
Palladium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Mercury
⊕
▶
◀ ▶ ADD ⊕
4.6.2 Reflectivity
Silver
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
4.7 Allotropes
✔ ✘
6% Transition Metals Metals have it !
4.7.1 α Allotropes
Not Available
4.7.2 β Allotropes
Not Available
4.7.3 γ Allotropes
Not Available
5 Chemical
5.1 Chemical Formula
Hf
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
⊕
▶
▼
32
Rank: 7 (Overall)▶
▲
Tennessine
⊕
▶
◀ ▶ ADD ⊕
5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
⊕
▶
▼
1.30
Rank: 32 (Overall)▶
▲
Francium
⊕
▶
◀ ▶ ADD ⊕
5.3.2 Sanderson Electronegativity
Cobalt
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.3.3 Allred Rochow Electronegativity
Gallium
⊕
▶
▼
1.23
Rank: 25 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.3.4 Mulliken-Jaffe Electronegativity
Polonium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.3.5 Allen Electronegativity
Berkelium
⊕
▶
▼
1.16
Rank: 37 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium
⊕
▶
▼
2.70
Rank: 22 (Overall)▶
▲
Gold
⊕
▶
◀ ▶ ADD ⊕
5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium
⊕
▶
▼
658.50 kJ/mol
Rank: 40 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.5.2 2nd Energy Level
Chromium
⊕
▶
▼
1,440.00 kJ/mol
Rank: 44 (Overall)▶
▲
Ruthenium
⊕
▶
◀ ▶ ADD ⊕
5.5.3 3rd Energy Level
Chromium
⊕
▶
▼
2,250.00 kJ/mol
Rank: 60 (Overall)▶
▲
Osmium
⊕
▶
◀ ▶ ADD ⊕
5.5.4 4th Energy Level
Chromium
⊕
▶
▼
3,216.00 kJ/mol
Rank: 63 (Overall)▶
▲
Thorium
⊕
▶
◀ ▶ ADD ⊕
5.5.5 5th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Dubnium
⊕
▶
◀ ▶ ADD ⊕
5.5.6 6th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Seaborgium
⊕
▶
◀ ▶ ADD ⊕
5.5.7 7th Energy level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Bohrium
⊕
▶
◀ ▶ ADD ⊕
5.5.8 8th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Hassium
⊕
▶
◀ ▶ ADD ⊕
5.5.9 9th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Yttrium
⊕
▶
◀ ▶ ADD ⊕
5.5.10 10th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Strontium
⊕
▶
◀ ▶ ADD ⊕
5.5.11 11th Energy Level
Magnesium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Yttrium
⊕
▶
◀ ▶ ADD ⊕
5.5.12 12th Energy Level
Magnesium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.13 13th Energy Level
Titanium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.14 14th Energy Level
Vanadium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.15 15th Energy Level
Chromium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Manganese
⊕
▶
◀ ▶ ADD ⊕
5.5.16 16th Energy Level
Manganese
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Iron
⊕
▶
◀ ▶ ADD ⊕
5.5.17 17th Energy Level
Iron
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Cobalt
⊕
▶
◀ ▶ ADD ⊕
5.5.18 18th Energy Level
Cobalt
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Nickel
⊕
▶
◀ ▶ ADD ⊕
5.5.19 19th Energy Level
Nickel
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Copper
⊕
▶
◀ ▶ ADD ⊕
5.5.20 20th Energy Level
Zinc
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.21 21st Energy Level
Zinc
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.22 22nd Energy Level
Copper
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.23 23rd Energy Level
Copper
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.24 24th Energy Level
Iron
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
◀ ▶ ADD ⊕
5.5.25 25th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.5.26 26th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.5.27 27th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.5.28 28th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.5.29 29th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.5.30 30th Energy Level
Molybdenum
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Molybdenum
⊕
▶
5.6 Electrochemical Equivalent
Francium
⊕
▶
▼
1.66 g/amp-hr
Rank: 44 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
5.7 Electron Work Function
Platinum
⊕
▶
▼
3.90 eV
Rank: 27 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
5.8 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
6 Atomic
6.1 Atomic Number
Tennessine
⊕
▶
▼
72
Rank: 44 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
6.2 Electron Configuration
[Xe] 4f14 5d2 6s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine
⊕
▶
▼
72
Rank: 43 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
6.4.2 Number of Neutrons
Flerovium
⊕
▶
▼
106
Rank: 29 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
6.4.3 Number of Electrons
Tennessine
⊕
▶
▼
72
Rank: 43 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium
⊕
▶
▼
159.00 pm
Rank: 28 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
6.5.2 Covalent Radius
Francium
⊕
▶
▼
175.00 pm
Rank: 23 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
6.5.3 Van der Waals Radius
Francium
⊕
▶
▼
200.00 pm
Rank: 28 (Overall)▶
▲
Zinc
⊕
▶
◀ ▶ ADD ⊕
6.6 Atomic Weight
Tennessine
⊕
▶
▼
178.49 amu
Rank: 39 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
6.7 Atomic Volume
Cesium
⊕
▶
▼
13.60 cm3/mol
Rank: 38 (Overall)▶
▲
Manganese
⊕
▶
◀ ▶ ADD ⊕
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
Platinum
⊕
▶
▼
81.00 (-eV)
Rank: 16 (Overall)▶
▲
Francium
⊕
▶
◀ ▶ ADD ⊕
6.10 Lattice Constant
Manganese
⊕
▶
▼
319.64 pm
Rank: 55 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
6.11 Lattice Angles
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
Cadmium
⊕
▶
▼
1.58
Rank: 12 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
Hassium
⊕
▶
▼
13.31 g/cm3
Rank: 26 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
7.1.2 Density When Liquid (at m.p.)
Osmium
⊕
▶
▼
12.00 g/cm3
Rank: 12 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
7.2 Tensile Strength
Iron
⊕
▶
▼
445.00 MPa
Rank: 8 (Overall)▶
▲
Indium
⊕
▶
◀ ▶ ADD ⊕
7.3 Viscosity
Mercury
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Mercury
⊕
▶
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Strontium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Cerium
⊕
▶
◀ ▶ ADD ⊕
7.4.2 Vapor Pressure at 2000 K
Chromium
⊕
▶
▼
0.00 (Pa)
Rank: 24 (Overall)▶
▲
Tungsten
⊕
▶
◀ ▶ ADD ⊕
7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium
⊕
▶
▼
30.00 GPa
Rank: 23 (Overall)▶
▲
Potassium
⊕
▶
◀ ▶ ADD ⊕
7.5.2 Bulk Modulus
Osmium
⊕
▶
▼
110.00 GPa
Rank: 15 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
7.5.3 Young's Modulus
Iridium
⊕
▶
▼
78.00 GPa
Rank: 25 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
7.6 Poisson Ratio
Gallium
⊕
▶
▼
0.37
Rank: 7 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
7.7 Other Mechanical Properties
Ductile, Malleable
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt
⊕
▶
▼
13.31
Rank: 18 (Overall)▶
▲
Lithium
⊕
▶
◀ ▶ ADD ⊕
8.1.2 Magnetic Ordering
Paramagnetic
8.1.3 Permeability
Iron
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Bismuth
⊕
▶
◀ ▶ ADD ⊕
8.1.4 Susceptibility
Iron
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Bismuth
⊕
▶
◀ ▶ ADD ⊕
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
8.2.2 Resistivity
Mercury
⊕
▶
▼
331.00 nΩ·m
Rank: 14 (Overall)▶
▲
Thallium
⊕
▶
◀ ▶ ADD ⊕
8.2.3 Electrical Conductivity
Silver
⊕
▶
▼
0.03 106/cm Ω
Rank: 39 (Overall)▶
▲
Plutonium
⊕
▶
◀ ▶ ADD ⊕
8.2.4 Electron Affinity
Gold
⊕
▶
▼
0.00 kJ/mol
Rank: 40 (Overall)▶
▲
Mercury
⊕
▶
◀ ▶ ADD ⊕
9 Thermal
9.1 Specific Heat
Lithium
⊕
▶
▼
0.14 J/(kg K)
Rank: 37 (Overall)▶
▲
Americium
⊕
▶
◀ ▶ ADD ⊕
9.2 Molar Heat Capacity
Americium
⊕
▶
▼
25.73 J/mol·K
Rank: 36 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕
9.3 Thermal Conductivity
Silver
⊕
▶
▼
23.00 W/m·K
Rank: 41 (Overall)▶
▲
Neptunium
⊕
▶
◀ ▶ ADD ⊕
9.4 Critical Temperature
Lithium
⊕
▶
▼
Not Available
Rank: N/A (Overall)▶
▲
Ytterbium
⊕
▶
◀ ▶ ADD ⊕
9.5 Thermal Expansion
Cesium
⊕
▶
▼
5.90 µm/(m·K)
Rank: 54 (Overall)▶
▲
Tungsten
⊕
▶
◀ ▶ ADD ⊕
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten
⊕
▶
▼
661.10 kJ/mol
Rank: 5 (Overall)▶
▲
Zinc
⊕
▶
◀ ▶ ADD ⊕
9.6.2 Enthalpy of Fusion
Tungsten
⊕
▶
▼
25.10 kJ/mol
Rank: 8 (Overall)▶
▲
Cesium
⊕
▶
◀ ▶ ADD ⊕
9.6.3 Enthalpy of Atomization
Tungsten
⊕
▶
▼
703.00 kJ/mol
Rank: 5 (Overall)▶
▲
Mercury
⊕
▶
◀ ▶ ADD ⊕
9.7 Standard Molar Entropy
Protactinium
⊕
▶
▼
43.60 J/mol.K
Rank: 34 (Overall)▶
▲
Beryllium
⊕
▶
◀ ▶ ADD ⊕

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