Osmi

Osmi (Os)

chemical element with symbol Os and atomic number 76
Atomic Number76
Atomic Weight190.23
Rhif màs192
Group8
Period6
Blockd
Proton76 p+
Niwtron116 n0
Electron76 e-
Animated Bohr model of Os (Osmi)

Nodwedd Ffisegol

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: Osmi0102030405060708090100110120130140150160170180190200210220pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
8.43823 eV/particle
ionization energy of Os (Osmi)
enthalpy of vaporization
738 kJ/mol
enthalpy of fusion
31.7 kJ/mol
standard enthalpy of formation
787 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 32, 14, 2
Bohr model: Os (Osmi)
valence electron2
Lewis structure: Os (Osmi)
trefn yr electronnau[Xe] 4f14 5d6 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d6 6s2
Enhanced Bohr model of Os (Osmi)
Orbital Diagram of Os (Osmi)
Cyflwr ocsidiad-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8
Electronegatifedd
2.2
Electrophilicity Index
1.5497236992588812 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
5,281.15 K
Melting Point
3,306.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Slate Gray
appearancesilvery, blue cast
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
0.0000051 1/K
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
12 MS/m
Gwrthedd
0.00000008000000000001 m Ω
superconductivity
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
strwythur
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2.74 Å
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
hardness
7 MPa
bulk modulus
shear modulus
222 GPa
Young's modulus
Poisson's ratio
0.25
speed of sound
4,940 m/s
classification
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

Rhif màs161
neutron number85
relative atomic mass
160.989054 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
640 ± 60 us
spin7/2
nuclear quadrupole moment
dyddiad darganfod2010
parity-

decay modeintensity
α (α emission)100%

162Os

Rhif màs162
neutron number86
relative atomic mass
161.984434 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.1 ± 0.1 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1989
parity+

decay modeintensity
α (α emission)100%

163Os

Rhif màs163
neutron number87
relative atomic mass
162.982462 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.7 ± 0.5 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1981
parity-

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

164Os

Rhif màs164
neutron number88
relative atomic mass
163.978073158 ± 0.000160927 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21 ± 1 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1981
parity+

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

165Os

Rhif màs165
neutron number89
relative atomic mass
164.976654 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
71 ± 3 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1978
parity-

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

166Os

Rhif màs166
neutron number90
relative atomic mass
165.972698135 ± 0.000019287 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
213 ± 5 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1977
parity+

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

167Os

Rhif màs167
neutron number91
relative atomic mass
166.971552304 ± 0.000086841 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
839 ± 5 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1977
parity-

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

168Os

Rhif màs168
neutron number92
relative atomic mass
167.96779905 ± 0.000010631 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.1 ± 0.1 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1977
parity+

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

169Os

Rhif màs169
neutron number93
relative atomic mass
168.967017521 ± 0.000027847 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.46 ± 0.11 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1972
parity-

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

170Os

Rhif màs170
neutron number94
relative atomic mass
169.963579273 ± 0.000010476 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.37 ± 0.18 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1972
parity+

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

171Os

Rhif màs171
neutron number95
relative atomic mass
170.963180402 ± 0.000019589 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.3 ± 0.2 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1972
parity-

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

172Os

Rhif màs172
neutron number96
relative atomic mass
171.960017309 ± 0.000013704 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
19.2 ± 0.9 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1971
parity+

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

173Os

Rhif màs173
neutron number97
relative atomic mass
172.959808387 ± 0.000016059 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22.4 ± 0.9 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1971
parity-

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

174Os

Rhif màs174
neutron number98
relative atomic mass
173.957063192 ± 0.000011008 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
44 ± 4 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1971
parity+

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

175Os

Rhif màs175
neutron number99
relative atomic mass
174.956945126 ± 0.00001264 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.4 ± 0.1 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1972
parity-

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

176Os

Rhif màs176
neutron number100
relative atomic mass
175.954770315 ± 0.000011754 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.6 ± 0.5 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1970
parity+

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

177Os

Rhif màs177
neutron number101
relative atomic mass
176.954957902 ± 0.000015687 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3 ± 0.2 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1970
parity-

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

178Os

Rhif màs178
neutron number102
relative atomic mass
177.953253334 ± 0.000014634 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5 ± 0.4 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1967
parity+

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

179Os

Rhif màs179
neutron number103
relative atomic mass
178.953815985 ± 0.000016645 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.5 ± 0.3 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1968
parity-

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

180Os

Rhif màs180
neutron number104
relative atomic mass
179.952381665 ± 0.000016878 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21.5 ± 0.4 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1967
parity+

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

181Os

Rhif màs181
neutron number105
relative atomic mass
180.953247188 ± 0.000027201 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
105 ± 3 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1966
parity-

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

182Os

Rhif màs182
neutron number106
relative atomic mass
181.952110154 ± 0.000023344 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21.84 ± 0.2 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1950
parity+

decay modeintensity
ϵ (electron capture)100%

183Os

Rhif màs183
neutron number107
relative atomic mass
182.953125028 ± 0.000053428 Da
g-factor
0.17644444444444 ± 0.0031111111111111
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13 ± 0.5 h
spin9/2
nuclear quadrupole moment
3.1 ± 0.3
dyddiad darganfod1950
parity+

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

184Os

Rhif màs184
neutron number108
relative atomic mass
183.952492919 ± 0.00000089 Da
g-factor
0
natural abundance
0.02 ± 0.02
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11.2 ± 2.3 Ty
spin0
nuclear quadrupole moment
0
dyddiad darganfod1937
parity+

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

185Os

Rhif màs185
neutron number109
relative atomic mass
184.954045969 ± 0.000000893 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
92.95 ± 0.09 d
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1947
parity-

decay modeintensity
ϵ (electron capture)100%

186Os

Rhif màs186
neutron number110
relative atomic mass
185.953837569 ± 0.000000816 Da
g-factor
0
natural abundance
1.59 ± 0.64
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2 ± 1.1 Py
spin0
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

decay modeintensity
α (α emission)100%

187Os

Rhif màs187
neutron number111
relative atomic mass
186.955749569 ± 0.000000791 Da
g-factor
natural abundance
1.96 ± 0.17
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1931
parity-

decay modeintensity
α (α emission)

188Os

Rhif màs188
neutron number112
relative atomic mass
187.955837292 ± 0.000000788 Da
g-factor
0
natural abundance
13.24 ± 0.27
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

decay modeintensity
α (α emission)

189Os

Rhif màs189
neutron number113
relative atomic mass
188.958145949 ± 0.000000715 Da
g-factor
natural abundance
16.15 ± 0.23
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
0.86 ± 0.03
dyddiad darganfod1931
parity-

decay modeintensity
α (α emission)

190Os

Rhif màs190
neutron number114
relative atomic mass
189.958445442 ± 0.000000697 Da
g-factor
0
natural abundance
26.26 ± 0.2
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

decay modeintensity
α (α emission)

191Os

Rhif màs191
neutron number115
relative atomic mass
190.960928105 ± 0.000000707 Da
g-factor
0.21333333333333 ± 0.0066666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
14.99 ± 0.02 d
spin9/2
nuclear quadrupole moment
2.53 ± 0.16
dyddiad darganfod1940
parity-

decay modeintensity
β (β decay)100%

192Os

Rhif màs192
neutron number116
relative atomic mass
191.961478765 ± 0.000002484 Da
g-factor
0
natural abundance
40.78 ± 0.32
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

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

193Os

Rhif màs193
neutron number117
relative atomic mass
192.964149637 ± 0.00000249 Da
g-factor
0.48666666666667 ± 0.0013333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29.83 ± 0.018 h
spin3/2
nuclear quadrupole moment
dyddiad darganfod1940
parity-

decay modeintensity
β (β decay)100%

194Os

Rhif màs194
neutron number118
relative atomic mass
193.965179407 ± 0.000002579 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6 ± 0.2 y
spin0
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

decay modeintensity
β (β decay)100%

195Os

Rhif màs195
neutron number119
relative atomic mass
194.968318 ± 0.00006 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.5 ± 1.1 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod2004
parity-

decay modeintensity
β (β decay)100%

196Os

Rhif màs196
neutron number120
relative atomic mass
195.969643261 ± 0.000043 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
34.9 ± 0.2 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1977
parity+

decay modeintensity
β (β decay)100%

197Os

Rhif màs197
neutron number121
relative atomic mass
196.973076 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
93 ± 7 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod2003
parity-

decay modeintensity
β (β decay)100%

198Os

Rhif màs198
neutron number122
relative atomic mass
197.974664 ± 0.000215 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
125 ± 28 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod2008
parity+

decay modeintensity
β (β decay)100%

199Os

Rhif màs199
neutron number123
relative atomic mass
198.978239 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6 ± 3 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod2008
parity-

decay modeintensity
β (β decay)100%

200Os

Rhif màs200
neutron number124
relative atomic mass
199.980086 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7 ± 4 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod2005
parity+

decay modeintensity
β (β decay)100%

201Os

Rhif màs201
neutron number125
relative atomic mass
200.984069 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2009
parity-

decay modeintensity
β (β decay)

202Os

Rhif màs202
neutron number126
relative atomic mass
201.986548 ± 0.000429 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod2009
parity+

decay modeintensity
β (β decay)

203Os

Rhif màs203
neutron number127
relative atomic mass
202.992195 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin9/2
nuclear quadrupole moment
dyddiad darganfod2012
parity+

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

hanes

darganfyddwr neu ddyfeisiwrSmithson Tenant
man darganfodEngland
dyddiad darganfod1804
geirdarddiadGreek: osmê (odor).
ynganiadOZ-mi-em (Saesneg)

source

Abundance
Abundance in Earth's crust
0.0015 mg/kg
natural abundance (cefnfor)
natural abundance (corff dynol)
natural abundance (Awyrfaen)
0.000066 %
natural abundance (Haul)
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