Iridi

Iridi (Ir)

chemical element with symbol Ir and atomic number 77
Atomic Number77
Atomic Weight192.217
Rhif màs193
Group9
Period6
Blockd
Proton77 p+
Niwtron116 n0
Electron77 e-
Animated Bohr model of Ir (Iridi)

Nodwedd Ffisegol

Atomic Radius
135 pm
molar volume
covalent radius
122 pm
Metallic Radius
127 pm
ionic radius
68 pm
Crystal Radius
82 pm
Van der Waals radius
213 pm
density
22.5622 g/cm³
Atomic Radii Of The Elements: Iridi0102030405060708090100110120130140150160170180190200210220pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
8.96702 eV/particle
ionization energy of Ir (Iridi)
enthalpy of vaporization
604 kJ/mol
enthalpy of fusion
27.61 kJ/mol
standard enthalpy of formation
669 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 32, 15, 2
Bohr model: Ir (Iridi)
valence electron2
Lewis structure: Ir (Iridi)
trefn yr electronnau[Xe] 4f14 5d7 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d7 6s2
Enhanced Bohr model of Ir (Iridi)
Orbital Diagram of Ir (Iridi)
Cyflwr ocsidiad-3, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Electronegatifedd
2.2
Electrophilicity Index
1.872465121129725 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
4,701.15 K
Melting Point
2,719.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancesilvery white
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
0.0000064 1/K
molar heat capacity
Specific Heat Capacity
0.131 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
21 MS/m
Gwrthedd
0.00000004699999999998 m Ω
superconductivity
0.11 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.00000000167 m³/Kg
magnetic susceptibility (Molar)
0.000000000321 m³/mol
magnetic susceptibility (Volume)
0.0000377
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal StructureFace Centered Cubic (FCC)
lattice constant
3.84 Å
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
6.5 MPa
bulk modulus
320 GPa
shear modulus
210 GPa
Young's modulus
528 GPa
Poisson's ratio
0.26
speed of sound
4,825 m/s
classification
CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number62
Mendeleev Number65
Pettifor Number65
Geochemical Classnoble metal
Goldschmidt classificationsiderophile

other

Gas Basicity
polarizability
54 ± 7 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
425
Neutron Mass Absorption
0.081
quantum number4F9/2
space group225 (Fm_3m)

Isotopes of Iridium

Stable Isotopes2
Unstable Isotopes41
Natural Isotopes2
Isotopic Composition19362.70%19362.70%19137.30%19137.30%

163Ir

Rhif màs163
neutron number86
relative atomic mass
162.994299 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod
parity+

decay modeintensity
p (proton emission)

164Ir

Rhif màs164
neutron number87
relative atomic mass
163.991966 ± 0.000339 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin2
nuclear quadrupole moment
dyddiad darganfod
parity-

decay modeintensity
p (proton emission)
α (α emission)
β+ (β+ decay; β+ = ϵ + e+)

165Ir

Rhif màs165
neutron number88
relative atomic mass
164.987552 ± 0.00017 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod
parity+

decay modeintensity
p (proton emission)
α (α emission)

166Ir

Rhif màs166
neutron number89
relative atomic mass
165.985716 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
10.5 ± 2.2 ms
spin2
nuclear quadrupole moment
dyddiad darganfod1981
parity

decay modeintensity
α (α emission)93%
p (proton emission)7%

167Ir

Rhif màs167
neutron number90
relative atomic mass
166.981671973 ± 0.000019694 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29.3 ± 0.6 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1981
parity+

decay modeintensity
α (α emission)43.5%
p (proton emission)38.6%
β+ (β+ decay; β+ = ϵ + e+)

168Ir

Rhif màs168
neutron number91
relative atomic mass
167.979960978 ± 0.000059277 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
230 ± 50 ms
spin2
nuclear quadrupole moment
dyddiad darganfod1978
parity

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

169Ir

Rhif màs169
neutron number92
relative atomic mass
168.976281743 ± 0.00002502 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
353 ± 4 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

decay modeintensity
α (α emission)53%
β+ (β+ decay; β+ = ϵ + e+)

170Ir

Rhif màs170
neutron number93
relative atomic mass
169.975113 ± 0.000109 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
910 ± 150 ms
spin3
nuclear quadrupole moment
dyddiad darganfod1977
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)5.2%

171Ir

Rhif màs171
neutron number94
relative atomic mass
170.97164552 ± 0.000041295 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.1 ± 0.3 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)15%

172Ir

Rhif màs172
neutron number95
relative atomic mass
171.970607035 ± 0.000034785 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.4 ± 0.3 s
spin3
nuclear quadrupole moment
dyddiad darganfod1967
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98%
α (α emission)2%

173Ir

Rhif màs173
neutron number96
relative atomic mass
172.967505477 ± 0.000011316 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9 ± 0.8 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.5%
α (α emission)3.5%

174Ir

Rhif màs174
neutron number97
relative atomic mass
173.966949939 ± 0.000012046 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.9 ± 0.6 s
spin2
nuclear quadrupole moment
dyddiad darganfod1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.5%
α (α emission)0.5%

175Ir

Rhif màs175
neutron number98
relative atomic mass
174.964149519 ± 0.000013295 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9 ± 2 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.15%
α (α emission)0.85%

176Ir

Rhif màs176
neutron number99
relative atomic mass
175.963626261 ± 0.000008679 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.7 ± 0.5 s
spin3
nuclear quadrupole moment
dyddiad darganfod1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.9%
α (α emission)3.1%

177Ir

Rhif màs177
neutron number100
relative atomic mass
176.9613015 ± 0.000021213 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29.8 ± 1.7 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1967
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.06%

178Ir

Rhif màs178
neutron number101
relative atomic mass
177.961079395 ± 0.000020204 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12 ± 2 s
spin3
nuclear quadrupole moment
dyddiad darganfod1972
parity+

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

179Ir

Rhif màs179
neutron number102
relative atomic mass
178.959117594 ± 0.000010489 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
79 ± 1 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1992
parity

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

180Ir

Rhif màs180
neutron number103
relative atomic mass
179.959229446 ± 0.000023302 Da
g-factor
0.5 ± 0.04
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.5 ± 0.1 m
spin5
nuclear quadrupole moment
dyddiad darganfod1972
parity+

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

181Ir

Rhif màs181
neutron number104
relative atomic mass
180.957634691 ± 0.000005631 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.9 ± 0.15 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1972
parity-

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

182Ir

Rhif màs182
neutron number105
relative atomic mass
181.958076296 ± 0.000022509 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
15 ± 1 m
spin3
nuclear quadrupole moment
dyddiad darganfod1961
parity+

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

183Ir

Rhif màs183
neutron number106
relative atomic mass
182.956841231 ± 0.000026486 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
58 ± 5 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1961
parity-

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

184Ir

Rhif màs184
neutron number107
relative atomic mass
183.957476 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.09 ± 0.03 h
spin5
nuclear quadrupole moment
2.41 ± 0.03
dyddiad darganfod1960
parity-

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

185Ir

Rhif màs185
neutron number108
relative atomic mass
184.956698 ± 0.00003 Da
g-factor
1.0384 ± 0.0052
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
14.4 ± 0.1 h
spin5/2
nuclear quadrupole moment
dyddiad darganfod1958
parity-

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

186Ir

Rhif màs186
neutron number109
relative atomic mass
185.957946754 ± 0.00001774 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
16.64 ± 0.03 h
spin5
nuclear quadrupole moment
-2.55 ± 0.03
dyddiad darganfod1958
parity+

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

187Ir

Rhif màs187
neutron number110
relative atomic mass
186.957542 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
10.5 ± 0.3 h
spin3/2
nuclear quadrupole moment
0.941 ± 0.011
dyddiad darganfod1958
parity+

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

188Ir

Rhif màs188
neutron number111
relative atomic mass
187.958834999 ± 0.000010116 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
41.5 ± 0.5 h
spin1
nuclear quadrupole moment
0.484 ± 0.006
dyddiad darganfod1950
parity-

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

189Ir

Rhif màs189
neutron number112
relative atomic mass
188.958722602 ± 0.0000135 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13.2 ± 0.1 d
spin3/2
nuclear quadrupole moment
dyddiad darganfod1955
parity+

decay modeintensity
ϵ (electron capture)100%

190Ir

Rhif màs190
neutron number113
relative atomic mass
189.960543374 ± 0.00000147 Da
g-factor
0.01 ± 0.0025
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11.78 ± 0.1 d
spin4
nuclear quadrupole moment
2.87 ± 0.16
dyddiad darganfod1947
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)0.002%

191Ir

Rhif màs191
neutron number114
relative atomic mass
190.960591455 ± 0.000001406 Da
g-factor
0.10013333333333 ± 0.0004
natural abundance
37.3 ± 0.2
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0.816 ± 0.009
dyddiad darganfod1935
parity+

192Ir

Rhif màs192
neutron number115
relative atomic mass
191.962602414 ± 0.00000141 Da
g-factor
0.47925 ± 0.0025
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
73.82 ± 0.014 d
spin4
nuclear quadrupole moment
2.15 ± 0.06
dyddiad darganfod1937
parity+

decay modeintensity
β (β decay)95.24%
ϵ (electron capture)4.76%

193Ir

Rhif màs193
neutron number116
relative atomic mass
192.962923753 ± 0.000001425 Da
g-factor
0.10866666666667 ± 0.0004
natural abundance
62.7 ± 0.2
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0.751 ± 0.009
dyddiad darganfod1935
parity+

194Ir

Rhif màs194
neutron number117
relative atomic mass
193.965075703 ± 0.000001429 Da
g-factor
0.39 ± 0.01
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
19.35 ± 0.07 h
spin1
nuclear quadrupole moment
0.339 ± 0.012
dyddiad darganfod1937
parity-

decay modeintensity
β (β decay)100%

195Ir

Rhif màs195
neutron number118
relative atomic mass
194.965976898 ± 0.000001431 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.29 ± 0.17 h
spin3/2
nuclear quadrupole moment
dyddiad darganfod1952
parity+

decay modeintensity
β (β decay)100%

196Ir

Rhif màs196
neutron number119
relative atomic mass
195.968399669 ± 0.000041239 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
52 ± 1.1 s
spin1
nuclear quadrupole moment
dyddiad darganfod1966
parity

decay modeintensity
β (β decay)100%

197Ir

Rhif màs197
neutron number120
relative atomic mass
196.969657217 ± 0.000021588 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.8 ± 0.5 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod1952
parity+

decay modeintensity
β (β decay)100%

198Ir

Rhif màs198
neutron number121
relative atomic mass
197.972399 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.7 ± 0.4 s
spin1
nuclear quadrupole moment
dyddiad darganfod1973
parity-

decay modeintensity
β (β decay)100%

199Ir

Rhif màs199
neutron number122
relative atomic mass
198.973807097 ± 0.000044073 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7 ± 5 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1993
parity+

decay modeintensity
β (β decay)100%

200Ir

Rhif màs200
neutron number123
relative atomic mass
199.976844 ± 0.00021 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
43 ± 6 s
spin2
nuclear quadrupole moment
dyddiad darganfod2008
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

201Ir

Rhif màs201
neutron number124
relative atomic mass
200.978701 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21 ± 5 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod2008
parity+

decay modeintensity
β (β decay)100%

202Ir

Rhif màs202
neutron number125
relative atomic mass
201.982136 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11 ± 3 s
spin2
nuclear quadrupole moment
dyddiad darganfod2008
parity-

decay modeintensity
β (β decay)100%

203Ir

Rhif màs203
neutron number126
relative atomic mass
202.984573 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod2009
parity+

decay modeintensity
β (β decay)

204Ir

Rhif màs204
neutron number127
relative atomic mass
203.989726 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod2011
parity

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

205Ir

Rhif màs205
neutron number128
relative atomic mass
204.993988 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod2012
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Iridium foil

hanes

darganfyddwr neu ddyfeisiwrS.Tenant, A.F.Fourcory, L.N.Vauquelin, H.V.Collet-Descoltils
man darganfodEngland/France
dyddiad darganfod1804
geirdarddiadLatin: iris (rainbow).
ynganiadi-RID-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust
0.001 mg/kg
natural abundance (cefnfor)
natural abundance (corff dynol)
natural abundance (Awyrfaen)
0.000054 %
natural abundance (Haul)
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