74
W
Tungsten
183.841
Basic Information
Bohr Model
Descriptive Numbers
Mass
Periodic Position
Classification
Abundance
Color
Atomic Radius
Temperature
Density
Heat
Speed of Sound
Electrical Resistance
Magnetic Properties
Elasticity
Hardness
Etymology
Discovery & Isolation
Production & Use
Radioactivity
Electron Affinity
Dipole Polarity
Lattice
Electron & Quantum
List of Compounds
Basic Information
Name
Tungsten
Alternative Name
Wolfram
Atomic Number
74
Appearance
Grayish white, shiny
Phase At STP
Solid
Spectrum Image
Source
WikipediaBohr Model
Static
Interactive
Descriptive Numbers
CAS Number
7440-33-7
CID Number
CID23964
DOT Number
3089
RTECS Number
RTECSYO7175000
Mendeleev Number
53
Pettifor Number
56
Space Group Number
229
Glawe Number
57
Mass
Atomic Mass
183.841 Da
Uncertainty
0.01
Periodic Position
X Position
6
Y Position
6
Period
6
Group
6
Classification
Block
d
Category
Transition Metal
Goldschmidt
Lithophilic
Electrical Type
Conductive
Abundance
Urban Soil
0.0029 mg/kg
Seawater
1e-10 kg/L
Sun
3.6e-7 mole ratio to silicon
Earth Crust
0.0000013 g
Solar System
1.3e-7 mole ratio to silicon
Meteorites
0.000012 %
Color
Jmol
#2194D6
Molcas Gv
#2194D6
CPK
#FF1493
Atomic Radius
Empirical
135
Calculated
193
Batsanov
210
Rahm
253
Uff
309.6
Mm3
239
Alvarez
257
Covalent (Single Bound)
146
Covalent (Triple Bound)
115
Covalent (Cordero)
162
Covalent (Pyykko)
137
Covalent (Pyykko Double)
120
Covalent (Pyykko Triple)
115
Mendeleev
130
C12
139
Metallic
139
Temperature
Melting/Freeze (USE)
3695 °K
Melting/Freeze (WEL)
3695 °K
Melting/Freeze (CRC)
3695 °K
Melting/Freeze (LNG)
3660 °K
Boiling/Density (USE)
6203 °K
Boiling/Density (WEL)
5828 °K
Boiling/Density (CRC)
5828 °K
Boiling/Density (LNG)
6173 °K
Boiling/Density (Zhang)
6203 °K
Superconducting Point
0.02 °K
Density
STP
19.25 kg/cm³
Solid (WEL)
19250 kg/cm³
Solid (CRC)
19300 kg/cm³
Solid (LNG)
19250 kg/cm³
Liquid (CR2)
17600 kg/cm³
Heat
Molar Volume
9.47 cm³/mol
Atomic Volume
9.53 cm³
Heat Of Fusion USE
35 kJ/mol
Heat Of Fusion CRC
52.31 kJ/mol
Heat Of Fusion LNG
52.31 kJ/mol
Heat Of Fusion WEL
35 kJ/mol
Evaporation USE
824 kJ/mol
Evaporation LNG
806.7 kJ/mol
Evaporation WEL
800 kJ/mol
Evaporation Zhang
774 kJ/mol
Molar Heat
24.27 J/molK
Heat Capacity USE
0.133 J/gK
Heat Capacity CRC
24.27 J/gK
Heat Capacity LNG
24.3 J/gK
Heat Capacity WEL
24.3 J/gK
Thermal Conductivity
173 W/m*K
Thermal Expansion
0.0000045 1/K
Adiabatic Index
N/A
Speed of Sound
Longitudinal
5220 m/s
Transversal
2890 m/s
Extensional
4620 m/s
Electrical Resistance
80k
6.06 nΩm
273k
48.2 nΩm
293k
52.8 nΩm
298k
53.9 nΩm
300k
54.4 nΩm
500k
103 nΩm
Magnetic Properties
Order
paramanyetic
Susceptibility
4.6e-9 m3/kg
Elasticity
Shear Modulus
161 GPa
Bulk Modulus
310 GPa
Poisson Ratio
0.28 ν
Youngs Modulus
411 GPa
Hardness
Mohs
7.5
Brinell
2000–4000
Vickers
3430–4600
Etymology
Description
Formerly known as tungsten, it is a transition metal that can be white or grey. It forms a protective oxide layer in air and oxidizes at high temperatures. It was isolated by Jose and Fausto de Elhuyer in 1783.
Language Of Origin
Swedish and Danish
Origin Of Word
Tungsten means "heavy stone" in Swedish (The symbol W represents the tungsten mineral wolframite, its former name tungsten).
Meaning
heavy stone
Symbol Origin
descriptive
Etymological Description
From the Swedish and Danish expression tung sten meaning "heavy stone". The symbol W comes from the German word Wolfram. The old spelling of the word, Wolfrahm, literally means "wolf foam". Wolfram or tungsten is still in use in Swedish and many other languages.
Discovery & Isolation
Observed/Predicted By
W. Scheele
Observed/Discovery Year
1781
Discovery Location
Isolated Sample By
Juan José sees Fausto Elhuyar
Isolated Sample Year
1783
Production & Use
Sources
It is found in scheelite (CaWO4) and wolframite [(Fe,Mn)WO4] minerals.
Uses
It is used in the production of filaments required in vacuum tubes and electric lamps. It is also available in platinum in cars. Phosphorus is obtained when mixed with calcium or magnesium. Tungsten carbide is extremely hard and is used in the production of cutting tools and abrasives.
Radioactivity
Half Life
Stable
Lifetime
Stable
Neutron Mass Absorption
0.0036
Neutron Cross Section
18.4
Electron Affinity
Electron Affinity (eV)
0.81626
Electron Affinity (kJ/mol)
78.76
Electron Affinity (pauling)
2.36
Electron Affinity (allen)
8.67
Electron Affinity (ghosh)
0.2390504
Dipole Polarity
Accepted
68
Uncertainty
15
C6 GB
757
Lattice
Constant Internal Default Radius
3.16
Strucutre
BCC
Angles
p/2, p/2, p/2
Electron & Quantum
Oxidation States
−4,−2,−1,0,1,2,3,4,5,6
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4
Quantum Number
5D0
Electron Configuration Semantic
[Rook] 4f14 5d4 6s2
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
32
Shells-4
12
Shells-5
2
Ionization Energies-0
770
Ionization Energies-1
1700
List of Compounds
1-10 of 100 compounds
| Formula | Names |
|---|---|
| W | tungsten tungsten metal wolfram |
| WB | tungsten boride boranylidynetungsten tungsten monoboride |
| Br4W | tungsten(IV) bromide |
| WBr5 | tungsten(V)bromide pentabromotungsten |
| WC | tungsten carbide methanidylidynetungsten |
| WCl4 | tungsten(IV)chloride tetrachlorotungsten tungsten tetrachloride |
| Cl5W | tungsten(V) chloride |
| WCl6 | tungsten hexachloride hexachlorotungsten tungsten chloridetungsten(VI) chloride |
| F4W | tungsten(IV) fluoride |
| F5W | tungsten(V) fluoride |
