Wolfraam

Wolfraam (W)

chemical element with symbol W and atomic number 74
Atomic Number74
Atomic Weight183.84
Massagetal184
Group6
Period6
Blockd
proton74 p+
neutron110 n0
elektron74 e-
Animated Bohr model of W (Wolfraam)

Physical Property

Atoomradius
135 pm
molar volume
Covalent Radius
137 pm
Metallic Radius
130 pm
Ioonradius
66 pm
Crystal Radius
80 pm
Van der Waals radius
218 pm
density
19,3 g/cm³
Atomic Radii Of The Elements: Wolfraam020406080100120140160180200220pmAtoomradiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energie
proton affinity
electron affinity
0,81626 eV/particle
ionization energy
7,86403 eV/particle
ionization energy of W (Wolfraam)
Verdampingswarmte
824 kJ/mol
smeltingswarmte
Vormingsentalpie
851 kJ/mol
elektron
Elektronskil2, 8, 18, 32, 12, 2
Bohr model: W (Wolfraam)
Valenselektrone2
Lewisteorie: W (Wolfraam)
elektronkonfigurasie[Xe] 4f14 5d4 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d4 6s2
Enhanced Bohr model of W (Wolfraam)
Orbital Diagram of W (Wolfraam)
Oksidasietoestand-4, -2, -1, 0, 1, 2, 3, 4, 5, 6
Elektronegatiwiteit
1.7
Electrophilicity Index
1,336370129915207 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
5 828,15 K
Melting Point
3 687,15 K
critical pressure
critical temperature
triple point
appearance
kleur
Gray
appearancegrayish white, lustrous
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000045 1/K
molar heat capacity
24,27 J/(mol K)
Specific Heat Capacity
0,132 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Geleidingsvermoë
20 MS/m
Elektriese resistiwiteit
0,00000004999999999997 m Ω
superconductivity
0,015 K
Magnetisme
typeparamagnetic
magnetic susceptibility (Mass)
0,00000000459 m³/Kg
magnetic susceptibility (Molar)
0,000000000844 m³/mol
magnetic susceptibility (Volume)
0,0000884
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureBody Centered Cubic (BCC)
lattice constant
3,16 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
7,5 MPa
Massamodulus
310 GPa
Skuifmodulus
161 GPa
Young se modulus
411 GPa
Poisson se verhouding
0,28
Spoed van klank
5 174 m/s
classification
CategoryTransition metals, Transition metals
CAS GroupVIA
IUPAC GroupVIB
Glawe Number57
Mendeleev Number53
Pettifor Number56
Geochemical Class
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
68 ± 15 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
18,4
Neutron Mass Absorption
0,0036
quantum number5D0
Ruimtegroep229 (Im_3m)

Isotopes of Tungsten

Stable Isotopes0
Unstable Isotopes41
Natural Isotopes5
Isotopic Composition18430.64%18430.64%18628.43%18628.43%18226.50%18226.50%18314.31%18314.31%1800.12%1800.12%

157W

Massagetal157
neutron number83
relative atomic mass
156,978862 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
275 ± 40 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum2010
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0%

158W

Massagetal158
neutron number84
relative atomic mass
157,974565 ± 0,000322 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,43 ± 0,18 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1981
parity+

decay modeintensity
α (α emission)100%

159W

Massagetal159
neutron number85
relative atomic mass
158,972696 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
8,2 ± 0,7 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1981
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

160W

Massagetal160
neutron number86
relative atomic mass
159,968513946 ± 0,000160828 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
90 ± 5 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1979
parity+

decay modeintensity
α (α emission)87%
β+ (β+ decay; β+ = ϵ + e+)

161W

Massagetal161
neutron number87
relative atomic mass
160,967249 ± 0,000215 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
409 ± 16 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1973
parity-

decay modeintensity
α (α emission)73%
β+ (β+ decay; β+ = ϵ + e+)27%

162W

Massagetal162
neutron number88
relative atomic mass
161,963500341 ± 0,000018955 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,19 ± 0,12 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1973
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)45.2%

163W

Massagetal163
neutron number89
relative atomic mass
162,962524251 ± 0,000062722 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,63 ± 0,09 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1973
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)14%

164W

Massagetal164
neutron number90
relative atomic mass
163,958952445 ± 0,000010384 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
6,3 ± 0,2 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1973
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.2%
α (α emission)3.8%

165W

Massagetal165
neutron number91
relative atomic mass
164,958280663 ± 0,000027649 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
5,1 ± 0,5 s
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1975
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

166W

Massagetal166
neutron number92
relative atomic mass
165,955031952 ± 0,000010159 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
19,2 ± 0,6 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1975
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.965%
α (α emission)0.035%

167W

Massagetal167
neutron number93
relative atomic mass
166,95481108 ± 0,000020078 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
19,9 ± 0,5 s
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1985
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.96%
α (α emission)0.04%

168W

Massagetal168
neutron number94
relative atomic mass
167,951805459 ± 0,000014233 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
50,9 ± 1,9 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1971
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.0032%

169W

Massagetal169
neutron number95
relative atomic mass
168,951778689 ± 0,000016571 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
74 ± 6 s
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1985
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

170W

Massagetal170
neutron number96
relative atomic mass
169,949231235 ± 0,000014165 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,42 ± 0,04 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1971
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

171W

Massagetal171
neutron number97
relative atomic mass
170,949451 ± 0,00003 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,38 ± 0,04 m
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1983
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

172W

Massagetal172
neutron number98
relative atomic mass
171,947292 ± 0,00003 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
6,6 ± 0,9 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1964
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

173W

Massagetal173
neutron number99
relative atomic mass
172,947689 ± 0,00003 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,6 ± 0,2 m
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

174W

Massagetal174
neutron number100
relative atomic mass
173,946079 ± 0,00003 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
33,2 ± 2,1 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1964
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

175W

Massagetal175
neutron number101
relative atomic mass
174,946717 ± 0,00003 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
35,2 ± 0,6 m
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

176W

Massagetal176
neutron number102
relative atomic mass
175,945634 ± 0,00003 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,5 ± 0,1 h
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1950
parity+

decay modeintensity
ϵ (electron capture)100%

177W

Massagetal177
neutron number103
relative atomic mass
176,946643 ± 0,00003 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
132,4 ± 2 m
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1950
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

178W

Massagetal178
neutron number104
relative atomic mass
177,945885791 ± 0,000016316 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
21,6 ± 0,3 d
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1950
parity+

decay modeintensity
ϵ (electron capture)100%

179W

Massagetal179
neutron number105
relative atomic mass
178,947079378 ± 0,000015644 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
37,05 ± 0,16 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1950
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

180W

Massagetal180
neutron number106
relative atomic mass
179,946713304 ± 0,000001545 Da
g-factor
0
natural abundance
0,12 ± 0,01
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,59 ± 0,5 Ey
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1937
parity+

decay modeintensity
α (α emission)100%
+ (double β+ decay)

181W

Massagetal181
neutron number107
relative atomic mass
180,948218733 ± 0,000001554 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
120,956 ± 0,019 d
spin9/2
nuclear quadrupole moment
ontdekkingsdatum1947
parity+

decay modeintensity
ϵ (electron capture)100%

182W

Massagetal182
neutron number108
relative atomic mass
181,948205636 ± 0,000000799 Da
g-factor
0
natural abundance
26,5 ± 0,16
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1930
parity+

decay modeintensity
α (α emission)

183W

Massagetal183
neutron number109
relative atomic mass
182,950224416 ± 0,000000798 Da
g-factor
natural abundance
14,31 ± 0,04
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1930
parity-

decay modeintensity
α (α emission)

184W

Massagetal184
neutron number110
relative atomic mass
183,95093318 ± 0,000000792 Da
g-factor
0
natural abundance
30,64 ± 0,02
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1930
parity+

decay modeintensity
α (α emission)

185W

Massagetal185
neutron number111
relative atomic mass
184,953421206 ± 0,000000793 Da
g-factor
0,362 ± 0,0093333333333333
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
75,1 ± 0,3 d
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1940
parity-

decay modeintensity
β (β decay)100%

186W

Massagetal186
neutron number112
relative atomic mass
185,95436514 ± 0,000001302 Da
g-factor
0
natural abundance
28,43 ± 0,19
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1930
parity+

decay modeintensity
(double β decay)
α (α emission)

187W

Massagetal187
neutron number113
relative atomic mass
186,957161249 ± 0,000001302 Da
g-factor
0,414 ± 0,01
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
23,809 ± 0,025 h
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1940
parity-

decay modeintensity
β (β decay)100%

188W

Massagetal188
neutron number114
relative atomic mass
187,958488325 ± 0,000003316 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
69,77 ± 0,05 d
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1951
parity+

decay modeintensity
β (β decay)100%

189W

Massagetal189
neutron number115
relative atomic mass
188,961557 ± 0,000215 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
11,6 ± 0,2 m
spin9/2
nuclear quadrupole moment
ontdekkingsdatum1963
parity-

decay modeintensity
β (β decay)100%

190W

Massagetal190
neutron number116
relative atomic mass
189,963103542 ± 0,000037993 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
30 ± 1,5 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1976
parity+

decay modeintensity
β (β decay)100%

191W

Massagetal191
neutron number117
relative atomic mass
190,966531 ± 0,000045 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1999
parity-

decay modeintensity
β (β decay)

192W

Massagetal192
neutron number118
relative atomic mass
191,968202 ± 0,000215 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1999
parity+

decay modeintensity
β (β decay)

193W

Massagetal193
neutron number119
relative atomic mass
192,971884 ± 0,000215 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum2009
parity-

decay modeintensity
β (β decay)

194W

Massagetal194
neutron number120
relative atomic mass
193,973795 ± 0,000322 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum2008
parity+

decay modeintensity
β (β decay)

195W

Massagetal195
neutron number121
relative atomic mass
194,977735 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin3/2
nuclear quadrupole moment
ontdekkingsdatum2012
parity-

decay modeintensity
β (β decay)

196W

Massagetal196
neutron number122
relative atomic mass
195,979882 ± 0,000429 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum2012
parity+

decay modeintensity
β (β decay)

197W

Massagetal197
neutron number123
relative atomic mass
196,984036 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin5/2
nuclear quadrupole moment
ontdekkingsdatum2012
parity-

decay modeintensity
β (β decay)
Wolfram evaporated crystals and 1cm3 cube

geskiedenis

Ontdek deurFausto and Juan José de Elhuyar
ligging van ontdekkingSpain
ontdekkingsdatum1783
etimologieSwedish: tung sten (heavy stone): symbol from its German name wolfram.
uitspraakTUNG-sten (Engels)

source

Abundance
Abundance in Earth's crust
1,25 mg/kg
natural abundance (oseaan)
0,0001 mg/L
natural abundance (human body)
natural abundance (Meteoroïde)
0,000012 %
natural abundance (Son)
0,0000004 %
Abundance in Universe
0,00000005 %

Nuclear Screening Constants

1s1.4343
2p4.4258
2s19.3302
3d13.5476
3p21.3824
3s22.13
4d36.8268
4f39.2892
4p34.4516
4s33.4412
5d57.258
5p52.6745
5s50.4585
6s64.1456