Iridium

Iridium (Ir)

grundämne
Atomnummer77
Atommassa192.217
masstal193
Grupp9
Period6
Blockd
Protoner77 p+
Neutroner116 n0
Electrons77 e-
Animated Bohrs atommodell of Ir (Iridium)

Egenskaper

atomradie
135 pm
molvolym
kovalent radie
122 pm
Metallic Radius
127 pm
ionic radius
68 pm
Crystal Radius
82 pm
Van der Waalsradie
213 pm
densitet
22,5622 g/cm³
energi
proton affinity
Elektronaffinitet
joniseringsenergi
8,96702 eV/particle
joniseringsenergi of Ir (Iridium)
ångbildningsvärme
604 kJ/mol
smältvärme
27,61 kJ/mol
Bildningsentalpi
669 kJ/mol
Electrons
electron shell2, 8, 18, 32, 15, 2
Bohrs atommodell: Ir (Iridium)
valenselektron2
elektronkonfiguration[Xe] 4f14 5d7 6s2
Enhanced Bohrs atommodell of Ir (Iridium)
Orbital Diagram of Ir (Iridium)
oxidationstal-3, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
elektronegativitet
2.2
Electrophilicity
1,872465121129725 eV/particle
Phases
aggregationstillståndFast
Gas Phase
Kokpunkt
4 701,15 K
Smältpunkt
2 719,15 K
critical pressure
critical temperature
trippelpunkt
Visual
färg
Silver
appearancesilvery white
Brytningsindex
materialegenskap
Värmeledningsförmåga
termisk expansion
0,0000064 1/K
molar heat capacity
Specifik värmekapacitet
0,131 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
elektrisk konduktivitet
21 MS/m
resistivitet
0,00000004699999999998 m Ω
supraledare
0,11 K
magnetism
typeparamagnetic
magnetisk susceptibilitet (Mass)
0,00000000167 m³/Kg
magnetisk susceptibilitet (Molar)
0,000000000321 m³/mol
magnetisk susceptibilitet (Volume)
0,0000377
magnetic ordering
Curiepunkten
Néel temperature
Structure
KristallstrukturYtcentrerat kubiskt (FCC)
Gitterkonstant
3,84 Å
Lattice Anglesπ/2, π/2, π/2
mekanisk materialegenskap
hårdhet
6,5 MPa
Kompressibilitet
320 GPa
skjuvmodul
210 GPa
Young's modulus
528 GPa
Poissons konstant
0,26
ljudhastighet
4 825 m/s
klassificering
KategoriÖvergångsmetaller, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number62
Mendeleev Number65
Pettifor Number65
Geochemical Classnoble metal
Goldschmidt classificationsiderophile
övrigt
Gas Basicity
Dipole Polarizability
54 ± 7 a₀
C6 Dispersion Coefficient
Allotropes
Träffyta
425
Neutron Mass Absorption
0,081
kvanttal4F9/2
rymdgrupp225 (Fm_3m)

Iridiumisotoper

Stabila isotoper2
Instabila isotoper41
Radioactive Isotopes40

163Ir

natural abundance
relative atomic mass
162,994299 ± 0,000429 Da
masstal163
g-factor
Halveringstid
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum
Paritet+

163Ir Decay Modes
decay modeIntensitet
p (proton emission)%

164Ir

natural abundanceRadioactive ☢️
relative atomic mass
163,991966 ± 0,000339 Da
masstal164
g-factor
Halveringstid
Spinn2
nuclear quadrupole moment
upptäcktsdatum
Paritet-

164Ir Decay Modes
decay modeIntensitet
p (proton emission)%
α (α emission)%
β+ (β+ decay; β+ = ϵ + e+)%

165Ir

natural abundanceRadioactive ☢️
relative atomic mass
164,987552 ± 0,00017 Da
masstal165
g-factor
Halveringstid
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum
Paritet+

165Ir Decay Modes
decay modeIntensitet
p (proton emission)%
α (α emission)%

166Ir

natural abundanceRadioactive ☢️
relative atomic mass
165,985716 ± 0,000215 Da
masstal166
g-factor
Halveringstid
10,5 ± 2,2 ms
Spinn2
nuclear quadrupole moment
upptäcktsdatum1981
Paritet

166Ir Decay Modes
decay modeIntensitet
α (α emission)93%
p (proton emission)7%

167Ir

natural abundanceRadioactive ☢️
relative atomic mass
166,981671973 ± 0,000019694 Da
masstal167
g-factor
Halveringstid
29,3 ± 0,6 ms
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1981
Paritet+

167Ir Decay Modes
decay modeIntensitet
α (α emission)43.5%
p (proton emission)38.6%
β+ (β+ decay; β+ = ϵ + e+)%

168Ir

natural abundanceRadioactive ☢️
relative atomic mass
167,979960978 ± 0,000059277 Da
masstal168
g-factor
Halveringstid
230 ± 50 ms
Spinn2
nuclear quadrupole moment
upptäcktsdatum1978
Paritet

168Ir Decay Modes
decay modeIntensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)%
β+ p (β+-delayed proton emission)%

169Ir

natural abundanceRadioactive ☢️
relative atomic mass
168,976281743 ± 0,00002502 Da
masstal169
g-factor
Halveringstid
353 ± 4 ms
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1978
Paritet+

169Ir Decay Modes
decay modeIntensitet
α (α emission)53%
β+ (β+ decay; β+ = ϵ + e+)%

170Ir

natural abundanceRadioactive ☢️
relative atomic mass
169,975113 ± 0,000109 Da
masstal170
g-factor
Halveringstid
910 ± 150 ms
Spinn3
nuclear quadrupole moment
upptäcktsdatum1977
Paritet-

170Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)%
α (α emission)5.2%

171Ir

natural abundanceRadioactive ☢️
relative atomic mass
170,97164552 ± 0,000041295 Da
masstal171
g-factor
Halveringstid
3,1 ± 0,3 s
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1967
Paritet+

171Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)%
α (α emission)15%

172Ir

natural abundanceRadioactive ☢️
relative atomic mass
171,970607035 ± 0,000034785 Da
masstal172
g-factor
Halveringstid
4,4 ± 0,3 s
Spinn3
nuclear quadrupole moment
upptäcktsdatum1967
Paritet-

172Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)98%
α (α emission)2%

173Ir

natural abundanceRadioactive ☢️
relative atomic mass
172,967505477 ± 0,000011316 Da
masstal173
g-factor
Halveringstid
9 ± 0,8 s
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1967
Paritet+

173Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)96.5%
α (α emission)3.5%

174Ir

natural abundanceRadioactive ☢️
relative atomic mass
173,966949939 ± 0,000012046 Da
masstal174
g-factor
Halveringstid
7,9 ± 0,6 s
Spinn2
nuclear quadrupole moment
upptäcktsdatum1967
Paritet+

174Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)99.5%
α (α emission)0.5%

175Ir

natural abundanceRadioactive ☢️
relative atomic mass
174,964149519 ± 0,000013295 Da
masstal175
g-factor
Halveringstid
9 ± 2 s
Spinn1/2
nuclear quadrupole moment
0
upptäcktsdatum1967
Paritet+

175Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)99.15%
α (α emission)0.85%

176Ir

natural abundanceRadioactive ☢️
relative atomic mass
175,963626261 ± 0,000008679 Da
masstal176
g-factor
Halveringstid
8,7 ± 0,5 s
Spinn3
nuclear quadrupole moment
upptäcktsdatum1967
Paritet+

176Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)96.9%
α (α emission)3.1%

177Ir

natural abundanceRadioactive ☢️
relative atomic mass
176,9613015 ± 0,000021213 Da
masstal177
g-factor
Halveringstid
29,8 ± 1,7 s
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1967
Paritet-

177Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.06%

178Ir

natural abundanceRadioactive ☢️
relative atomic mass
177,961079395 ± 0,000020204 Da
masstal178
g-factor
Halveringstid
12 ± 2 s
Spinn3
nuclear quadrupole moment
upptäcktsdatum1972
Paritet+

178Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

179Ir

natural abundanceRadioactive ☢️
relative atomic mass
178,959117594 ± 0,000010489 Da
masstal179
g-factor
Halveringstid
79 ± 1 s
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1992
Paritet

179Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

180Ir

natural abundanceRadioactive ☢️
relative atomic mass
179,959229446 ± 0,000023302 Da
masstal180
g-factor
0,5 ± 0,04
Halveringstid
1,5 ± 0,1 m
Spinn5
nuclear quadrupole moment
upptäcktsdatum1972
Paritet+

180Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

181Ir

natural abundanceRadioactive ☢️
relative atomic mass
180,957634691 ± 0,000005631 Da
masstal181
g-factor
Halveringstid
4,9 ± 0,15 m
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1972
Paritet-

181Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

182Ir

natural abundanceRadioactive ☢️
relative atomic mass
181,958076296 ± 0,000022509 Da
masstal182
g-factor
Halveringstid
15 ± 1 m
Spinn3
nuclear quadrupole moment
upptäcktsdatum1961
Paritet+

182Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

183Ir

natural abundanceRadioactive ☢️
relative atomic mass
182,956841231 ± 0,000026486 Da
masstal183
g-factor
Halveringstid
58 ± 5 m
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1961
Paritet-

183Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)%

184Ir

natural abundanceRadioactive ☢️
relative atomic mass
183,957476 ± 0,00003 Da
masstal184
g-factor
Halveringstid
3,09 ± 0,03 h
Spinn5
nuclear quadrupole moment
2,41 ± 0,03
upptäcktsdatum1960
Paritet-

184Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

185Ir

natural abundanceRadioactive ☢️
relative atomic mass
184,956698 ± 0,00003 Da
masstal185
g-factor
1,0384 ± 0,0052
Halveringstid
14,4 ± 0,1 h
Spinn5/2
nuclear quadrupole moment
upptäcktsdatum1958
Paritet-

185Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

186Ir

natural abundanceRadioactive ☢️
relative atomic mass
185,957946754 ± 0,00001774 Da
masstal186
g-factor
Halveringstid
16,64 ± 0,03 h
Spinn5
nuclear quadrupole moment
−2,55 ± 0,03
upptäcktsdatum1958
Paritet+

186Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

187Ir

natural abundanceRadioactive ☢️
relative atomic mass
186,957542 ± 0,00003 Da
masstal187
g-factor
Halveringstid
10,5 ± 0,3 h
Spinn3/2
nuclear quadrupole moment
0,941 ± 0,011
upptäcktsdatum1958
Paritet+

187Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

188Ir

natural abundanceRadioactive ☢️
relative atomic mass
187,958834999 ± 0,000010116 Da
masstal188
g-factor
Halveringstid
41,5 ± 0,5 h
Spinn1
nuclear quadrupole moment
0,484 ± 0,006
upptäcktsdatum1950
Paritet-

188Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

189Ir

natural abundanceRadioactive ☢️
relative atomic mass
188,958722602 ± 0,0000135 Da
masstal189
g-factor
Halveringstid
13,2 ± 0,1 d
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1955
Paritet+

189Ir Decay Modes
decay modeIntensitet
ϵ (electron capture)100%

190Ir

natural abundanceRadioactive ☢️
relative atomic mass
189,960543374 ± 0,00000147 Da
masstal190
g-factor
0,01 ± 0,0025
Halveringstid
11,78 ± 0,1 d
Spinn4
nuclear quadrupole moment
2,87 ± 0,16
upptäcktsdatum1947
Paritet-

190Ir Decay Modes
decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)0.002%

191Ir

natural abundance
37,3 ± 0,2
relative atomic mass
190,960591455 ± 0,000001406 Da
masstal191
g-factor
0,10013333333333 ± 0,0004
Halveringstid
Spinn3/2
nuclear quadrupole moment
0,816 ± 0,009
upptäcktsdatum1935
Paritet+

192Ir

natural abundanceRadioactive ☢️
relative atomic mass
191,962602414 ± 0,00000141 Da
masstal192
g-factor
0,47925 ± 0,0025
Halveringstid
73,82 ± 0,014 d
Spinn4
nuclear quadrupole moment
2,15 ± 0,06
upptäcktsdatum1937
Paritet+

192Ir Decay Modes
decay modeIntensitet
β (β decay)95.24%
ϵ (electron capture)4.76%

193Ir

natural abundance
62,7 ± 0,2
relative atomic mass
192,962923753 ± 0,000001425 Da
masstal193
g-factor
0,10866666666667 ± 0,0004
Halveringstid
Spinn3/2
nuclear quadrupole moment
0,751 ± 0,009
upptäcktsdatum1935
Paritet+

194Ir

natural abundanceRadioactive ☢️
relative atomic mass
193,965075703 ± 0,000001429 Da
masstal194
g-factor
0,39 ± 0,01
Halveringstid
19,35 ± 0,07 h
Spinn1
nuclear quadrupole moment
0,339 ± 0,012
upptäcktsdatum1937
Paritet-

194Ir Decay Modes
decay modeIntensitet
β (β decay)100%

195Ir

natural abundanceRadioactive ☢️
relative atomic mass
194,965976898 ± 0,000001431 Da
masstal195
g-factor
Halveringstid
2,29 ± 0,17 h
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1952
Paritet+

195Ir Decay Modes
decay modeIntensitet
β (β decay)100%

196Ir

natural abundanceRadioactive ☢️
relative atomic mass
195,968399669 ± 0,000041239 Da
masstal196
g-factor
Halveringstid
52 ± 1,1 s
Spinn1
nuclear quadrupole moment
upptäcktsdatum1966
Paritet

196Ir Decay Modes
decay modeIntensitet
β (β decay)100%

197Ir

natural abundanceRadioactive ☢️
relative atomic mass
196,969657217 ± 0,000021588 Da
masstal197
g-factor
Halveringstid
5,8 ± 0,5 m
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1952
Paritet+

197Ir Decay Modes
decay modeIntensitet
β (β decay)100%

198Ir

natural abundanceRadioactive ☢️
relative atomic mass
197,972399 ± 0,000215 Da
masstal198
g-factor
Halveringstid
8,7 ± 0,4 s
Spinn1
nuclear quadrupole moment
upptäcktsdatum1973
Paritet-

198Ir Decay Modes
decay modeIntensitet
β (β decay)100%

199Ir

natural abundanceRadioactive ☢️
relative atomic mass
198,973807097 ± 0,000044073 Da
masstal199
g-factor
Halveringstid
7 ± 5 s
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum1993
Paritet+

199Ir Decay Modes
decay modeIntensitet
β (β decay)100%

200Ir

natural abundanceRadioactive ☢️
relative atomic mass
199,976844 ± 0,00021 Da
masstal200
g-factor
Halveringstid
43 ± 6 s
Spinn2
nuclear quadrupole moment
upptäcktsdatum2008
Paritet-

200Ir Decay Modes
decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)%

201Ir

natural abundanceRadioactive ☢️
relative atomic mass
200,978701 ± 0,000215 Da
masstal201
g-factor
Halveringstid
21 ± 5 s
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum2008
Paritet+

201Ir Decay Modes
decay modeIntensitet
β (β decay)100%

202Ir

natural abundanceRadioactive ☢️
relative atomic mass
201,982136 ± 0,000322 Da
masstal202
g-factor
Halveringstid
11 ± 3 s
Spinn2
nuclear quadrupole moment
upptäcktsdatum2008
Paritet-

202Ir Decay Modes
decay modeIntensitet
β (β decay)100%

203Ir

natural abundanceRadioactive ☢️
relative atomic mass
202,984573 ± 0,000429 Da
masstal203
g-factor
Halveringstid
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum2009
Paritet+

203Ir Decay Modes
decay modeIntensitet
β (β decay)%

204Ir

natural abundanceRadioactive ☢️
relative atomic mass
203,989726 ± 0,000429 Da
masstal204
g-factor
Halveringstid
Spinn
nuclear quadrupole moment
upptäcktsdatum2011
Paritet

204Ir Decay Modes
decay modeIntensitet
β (β decay)%
β n (β-delayed neutron emission)%

205Ir

natural abundanceRadioactive ☢️
relative atomic mass
204,993988 ± 0,000537 Da
masstal205
g-factor
Halveringstid
Spinn3/2
nuclear quadrupole moment
upptäcktsdatum2012
Paritet+

205Ir Decay Modes
decay modeIntensitet
β (β decay)%
β n (β-delayed neutron emission)%
Iridium foil.jpg

historia

upptäckare eller uppfinnareS.Tenant, A.F.Fourcory, L.N.Vauquelin, H.V.Collet-Descoltils
fyndplatsEngland/France
upptäcktsdatum1804
etymologiLatin: iris (rainbow).
uttali-RID-i-em (engelska)

Sources

Förekomst
Abundance in Earth's crust
0,001 mg/kg
Abundance in Oceans
Abundance in Human Body
Abundance in Meteor
0,000054 %
Abundance in Sun
0,0000002 %
Abundance in Universe
0,0000002 %

Nuclear Screening Constants

1s1.4881
2p4.4624
2s20.1102
3d13.514
3p21.9311
3s22.7942
4d37.2628
4f38.6552
4p35.086
4s34.152
5d58.304
5p53.339
5s51.1545
6s66.4334