Osmium

Osmium (Os)

chemical element with symbol Os and atomic number 76
Atomic Number76
Atomic Weight190.23
mass number192
Group8
Period6
Blockd
proton76 p+
neutron116 n0
electron76 e-
Animated Bohr model of Os (Osmium)

Physical Property

Atomic Radius
130 pm
molar volume
Covalent Radius
129 pm
Metallic Radius
126 pm
ionic radius
63 pm
Crystal Radius
77 pm
Van der Waals radius
216 pm
density
22.5872 g/cm³
Atomic Radii Of The Elements: Osmium0102030405060708090100110120130140150160170180190200210220pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energia
proton affinity
electron affinity
ionization energy
8.43823 eV/particle
ionization energy of Os (Osmium)
enthalpy of vaporization
738 kJ/mol
enthalpy of fusion
31.7 kJ/mol
standard enthalpy of formation
787 kJ/mol
electron
Tegimen electronicum2, 8, 18, 32, 14, 2
Bohr model: Os (Osmium)
valence electron2
Lewis structure: Os (Osmium)
electron configuration[Xe] 4f14 5d6 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d6 6s2
Enhanced Bohr model of Os (Osmium)
Orbital Diagram of Os (Osmium)
oxidation number-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8
electronegativity
2.2
Electrophilicity Index
1.5497236992588812 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
5281.15 K
Melting Point
3306.15 K
critical pressure
critical temperature
Punctum triplex
appearance
Color
Slate Gray
appearancesilvery, blue cast
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
0.0000051 1/K
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
12 MS/m
electrical resistivity
0.00000008000000000001 m Ω
Superconductrum
0.66 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000006 m³/Kg
magnetic susceptibility (Molar)
0.00000000011 m³/mol
magnetic susceptibility (Volume)
0.000014
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2.74 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
7 MPa
bulk modulus
shear modulus
222 GPa
Young's modulus
Poisson's ratio
0.25
celeritas soni
4940 m/s
classificare
CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number60
Mendeleev Number61
Pettifor Number62
Geochemical Classnoble metal
Goldschmidt classificationsiderophile

other

Gas Basicity
polarizability
57 ± 3 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
15
Neutron Mass Absorption
0.0023
quantum number5D4
space group194 (P63/mmc)

Isotopes of Osmium

Stable Isotopes0
Unstable Isotopes43
Natural Isotopes7
Isotopic Composition19240.78%19240.78%19026.26%19026.26%18916.15%18916.15%18813.24%18813.24%1861.59%1861.59%1871.96%1871.96%1840.02%1840.02%

161Os

mass number161
neutron number85
relative atomic mass
160.989054 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
640 ± 60 us
Volubilitas7/2
nuclear quadrupole moment
repertus2010
parity-

decay modeintensity
α (α emission)100%

162Os

mass number162
neutron number86
relative atomic mass
161.984434 ± 0.000322 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
2.1 ± 0.1 ms
Volubilitas0
nuclear quadrupole moment
0
repertus1989
parity+

decay modeintensity
α (α emission)100%

163Os

mass number163
neutron number87
relative atomic mass
162.982462 ± 0.000322 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
5.7 ± 0.5 ms
Volubilitas7/2
nuclear quadrupole moment
repertus1981
parity-

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

164Os

mass number164
neutron number88
relative atomic mass
163.978073158 ± 0.000160927 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
21 ± 1 ms
Volubilitas0
nuclear quadrupole moment
0
repertus1981
parity+

decay modeintensity
α (α emission)96%
β+ (β+ decay; β+ = ϵ + e+)

165Os

mass number165
neutron number89
relative atomic mass
164.976654 ± 0.000215 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
71 ± 3 ms
Volubilitas7/2
nuclear quadrupole moment
repertus1978
parity-

decay modeintensity
α (α emission)90%
β+ (β+ decay; β+ = ϵ + e+)10%

166Os

mass number166
neutron number90
relative atomic mass
165.972698135 ± 0.000019287 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
213 ± 5 ms
Volubilitas0
nuclear quadrupole moment
0
repertus1977
parity+

decay modeintensity
α (α emission)83%
β+ (β+ decay; β+ = ϵ + e+)17%

167Os

mass number167
neutron number91
relative atomic mass
166.971552304 ± 0.000086841 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
839 ± 5 ms
Volubilitas7/2
nuclear quadrupole moment
repertus1977
parity-

decay modeintensity
α (α emission)51%
β+ (β+ decay; β+ = ϵ + e+)

168Os

mass number168
neutron number92
relative atomic mass
167.96779905 ± 0.000010631 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
2.1 ± 0.1 s
Volubilitas0
nuclear quadrupole moment
0
repertus1977
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)57%
α (α emission)43%

169Os

mass number169
neutron number93
relative atomic mass
168.967017521 ± 0.000027847 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3.46 ± 0.11 s
Volubilitas5/2
nuclear quadrupole moment
repertus1972
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)86.3%
α (α emission)13.7%

170Os

mass number170
neutron number94
relative atomic mass
169.963579273 ± 0.000010476 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
7.37 ± 0.18 s
Volubilitas0
nuclear quadrupole moment
0
repertus1972
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)90.5%
α (α emission)9.5%

171Os

mass number171
neutron number95
relative atomic mass
170.963180402 ± 0.000019589 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
8.3 ± 0.2 s
Volubilitas5/2
nuclear quadrupole moment
repertus1972
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)1.8%

172Os

mass number172
neutron number96
relative atomic mass
171.960017309 ± 0.000013704 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
19.2 ± 0.9 s
Volubilitas0
nuclear quadrupole moment
0
repertus1971
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.81%
α (α emission)1.19%

173Os

mass number173
neutron number97
relative atomic mass
172.959808387 ± 0.000016059 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
22.4 ± 0.9 s
Volubilitas5/2
nuclear quadrupole moment
repertus1971
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.6%
α (α emission)0.4%

174Os

mass number174
neutron number98
relative atomic mass
173.957063192 ± 0.000011008 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
44 ± 4 s
Volubilitas0
nuclear quadrupole moment
0
repertus1971
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.024%

175Os

mass number175
neutron number99
relative atomic mass
174.956945126 ± 0.00001264 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
1.4 ± 0.1 m
Volubilitas5/2
nuclear quadrupole moment
repertus1972
parity-

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

176Os

mass number176
neutron number100
relative atomic mass
175.954770315 ± 0.000011754 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
3.6 ± 0.5 m
Volubilitas0
nuclear quadrupole moment
0
repertus1970
parity+

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

177Os

mass number177
neutron number101
relative atomic mass
176.954957902 ± 0.000015687 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3 ± 0.2 m
Volubilitas1/2
nuclear quadrupole moment
0
repertus1970
parity-

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

178Os

mass number178
neutron number102
relative atomic mass
177.953253334 ± 0.000014634 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
5 ± 0.4 m
Volubilitas0
nuclear quadrupole moment
0
repertus1967
parity+

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

179Os

mass number179
neutron number103
relative atomic mass
178.953815985 ± 0.000016645 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
6.5 ± 0.3 m
Volubilitas1/2
nuclear quadrupole moment
0
repertus1968
parity-

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

180Os

mass number180
neutron number104
relative atomic mass
179.952381665 ± 0.000016878 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
21.5 ± 0.4 m
Volubilitas0
nuclear quadrupole moment
0
repertus1967
parity+

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

181Os

mass number181
neutron number105
relative atomic mass
180.953247188 ± 0.000027201 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
105 ± 3 m
Volubilitas1/2
nuclear quadrupole moment
0
repertus1966
parity-

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

182Os

mass number182
neutron number106
relative atomic mass
181.952110154 ± 0.000023344 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
21.84 ± 0.2 h
Volubilitas0
nuclear quadrupole moment
0
repertus1950
parity+

decay modeintensity
ϵ (electron capture)100%

183Os

mass number183
neutron number107
relative atomic mass
182.953125028 ± 0.000053428 Da
g-factor
0.17644444444444 ± 0.0031111111111111
natural abundance
radioactivitas☢️ radioactive element
half-life
13 ± 0.5 h
Volubilitas9/2
nuclear quadrupole moment
3.1 ± 0.3
repertus1950
parity+

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

184Os

mass number184
neutron number108
relative atomic mass
183.952492919 ± 0.00000089 Da
g-factor
0
natural abundance
0.02 ± 0.02
radioactivitas☢️ radioactive element
half-life
11.2 ± 2.3 Ty
Volubilitas0
nuclear quadrupole moment
0
repertus1937
parity+

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

185Os

mass number185
neutron number109
relative atomic mass
184.954045969 ± 0.000000893 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
92.95 ± 0.09 d
Volubilitas1/2
nuclear quadrupole moment
0
repertus1947
parity-

decay modeintensity
ϵ (electron capture)100%

186Os

mass number186
neutron number110
relative atomic mass
185.953837569 ± 0.000000816 Da
g-factor
0
natural abundance
1.59 ± 0.64
radioactivitas☢️ radioactive element
half-life
2 ± 1.1 Py
Volubilitas0
nuclear quadrupole moment
0
repertus1931
parity+

decay modeintensity
α (α emission)100%

187Os

mass number187
neutron number111
relative atomic mass
186.955749569 ± 0.000000791 Da
g-factor
natural abundance
1.96 ± 0.17
radioactivitas☢️ radioactive element
half-life
Volubilitas1/2
nuclear quadrupole moment
0
repertus1931
parity-

decay modeintensity
α (α emission)

188Os

mass number188
neutron number112
relative atomic mass
187.955837292 ± 0.000000788 Da
g-factor
0
natural abundance
13.24 ± 0.27
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1931
parity+

decay modeintensity
α (α emission)

189Os

mass number189
neutron number113
relative atomic mass
188.958145949 ± 0.000000715 Da
g-factor
natural abundance
16.15 ± 0.23
radioactivitas☢️ radioactive element
half-life
Volubilitas3/2
nuclear quadrupole moment
0.86 ± 0.03
repertus1931
parity-

decay modeintensity
α (α emission)

190Os

mass number190
neutron number114
relative atomic mass
189.958445442 ± 0.000000697 Da
g-factor
0
natural abundance
26.26 ± 0.2
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1931
parity+

decay modeintensity
α (α emission)

191Os

mass number191
neutron number115
relative atomic mass
190.960928105 ± 0.000000707 Da
g-factor
0.21333333333333 ± 0.0066666666666667
natural abundance
radioactivitas☢️ radioactive element
half-life
14.99 ± 0.02 d
Volubilitas9/2
nuclear quadrupole moment
2.53 ± 0.16
repertus1940
parity-

decay modeintensity
β (β decay)100%

192Os

mass number192
neutron number116
relative atomic mass
191.961478765 ± 0.000002484 Da
g-factor
0
natural abundance
40.78 ± 0.32
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1931
parity+

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

193Os

mass number193
neutron number117
relative atomic mass
192.964149637 ± 0.00000249 Da
g-factor
0.48666666666667 ± 0.0013333333333333
natural abundance
radioactivitas☢️ radioactive element
half-life
29.83 ± 0.018 h
Volubilitas3/2
nuclear quadrupole moment
repertus1940
parity-

decay modeintensity
β (β decay)100%

194Os

mass number194
neutron number118
relative atomic mass
193.965179407 ± 0.000002579 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
6 ± 0.2 y
Volubilitas0
nuclear quadrupole moment
0
repertus1951
parity+

decay modeintensity
β (β decay)100%

195Os

mass number195
neutron number119
relative atomic mass
194.968318 ± 0.00006 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
6.5 ± 1.1 m
Volubilitas3/2
nuclear quadrupole moment
repertus2004
parity-

decay modeintensity
β (β decay)100%

196Os

mass number196
neutron number120
relative atomic mass
195.969643261 ± 0.000043 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
34.9 ± 0.2 m
Volubilitas0
nuclear quadrupole moment
0
repertus1977
parity+

decay modeintensity
β (β decay)100%

197Os

mass number197
neutron number121
relative atomic mass
196.973076 ± 0.000215 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
93 ± 7 s
Volubilitas5/2
nuclear quadrupole moment
repertus2003
parity-

decay modeintensity
β (β decay)100%

198Os

mass number198
neutron number122
relative atomic mass
197.974664 ± 0.000215 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
125 ± 28 s
Volubilitas0
nuclear quadrupole moment
0
repertus2008
parity+

decay modeintensity
β (β decay)100%

199Os

mass number199
neutron number123
relative atomic mass
198.978239 ± 0.000215 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
6 ± 3 s
Volubilitas5/2
nuclear quadrupole moment
repertus2008
parity-

decay modeintensity
β (β decay)100%

200Os

mass number200
neutron number124
relative atomic mass
199.980086 ± 0.000322 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
7 ± 4 s
Volubilitas0
nuclear quadrupole moment
0
repertus2005
parity+

decay modeintensity
β (β decay)100%

201Os

mass number201
neutron number125
relative atomic mass
200.984069 ± 0.000322 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1/2
nuclear quadrupole moment
0
repertus2009
parity-

decay modeintensity
β (β decay)

202Os

mass number202
neutron number126
relative atomic mass
201.986548 ± 0.000429 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus2009
parity+

decay modeintensity
β (β decay)

203Os

mass number203
neutron number127
relative atomic mass
202.992195 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas9/2
nuclear quadrupole moment
repertus2012
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Osmium crystals

historia

inventorSmithson Tenant
location of discoveryEngland
repertus1804
EtymologiaGreek: osmê (odor).
pronunciationOZ-mi-em (English)

source

Abundance
Abundance in Earth's crust
0.0015 mg/kg
natural abundance (Oceanus)
natural abundance (Corpus humanum)
natural abundance (Meteoroides)
0.000066 %
natural abundance (Sol)
0.0000002 %
Abundance in Universe
0.0000003 %

Nuclear Screening Constants

1s1.4701
2p4.4502
2s19.8502
3d13.5253
3p21.7483
3s22.5727
4d37.142
4f38.8472
4p34.856
4s33.9048
5d58.003
5p53.09
5s50.905
6s65.677