Iridi (Ir)

chemical element with symbol Ir and atomic number 77

Atomic Number	77
Atomic Weight	192.217
Rhif màs	193

Group	9
Period	6
Block	d

Proton	77 p⁺
Niwtron	116 n⁰
Electron	77 e^-

Nodwedd Ffisegol

Atomic Radius	135 pm 240 pm
molar volume	8.54 cm³/mol
covalent radius	122 pm 115 pm 107 pm 141 pm
Metallic Radius	127 pm 136 pm
ionic radius	68 pm 62.5 pm 57 pm
Crystal Radius	82 pm 76.5 pm 71 pm
Van der Waals radius	200 pm 213 pm 236 pm 284 pm
density	22.5622 g/cm³ 19,000 kg/m³

Nodwedd Gemegol

{ERROR}

egni

proton affinity
electron affinity	1.5638 eV/particle
ionization energy	8.96702 eV/particle 17 eV/particle 28 eV/particle 40 eV/particle 57 eV/particle 72 eV/particle 89 eV/particle 105 eV/particle 123 eV/particle 194.8 eV/particle 217 eV/particle 240 eV/particle 264 eV/particle 303 eV/particle 329 eV/particle 356 eV/particle 407 eV/particle 445 eV/particle 472 eV/particle 510 eV/particle 560 eV/particle 610 eV/particle 670 eV/particle 720 eV/particle 770 eV/particle 820 eV/particle 870 eV/particle 920 eV/particle 980 eV/particle 1,030 eV/particle 1,080 eV/particle 1,331 eV/particle 1,381 eV/particle 1,436 eV/particle 1,493 eV/particle 1,548 eV/particle 1,603 eV/particle 1,684 eV/particle 1,739 eV/particle 1,801 eV/particle 1,857 eV/particle 2,083 eV/particle 2,139 eV/particle 2,201 eV/particle 2,258 eV/particle 2,435 eV/particle 2,500 eV/particle 2,656 eV/particle 2,720.4 eV/particle 4,540 eV/particle 4,668 eV/particle 4,806 eV/particle 4,952 eV/particle 5,092 eV/particle 5,229 eV/particle 5,466 eV/particle 5,609 eV/particle 5,765 eV/particle 5,910 eV/particle 6,315 eV/particle 6,441 eV/particle 6,580 eV/particle 6,708 eV/particle 7,274 eV/particle 7,421 eV/particle 7,710 eV/particle 7,850 eV/particle 17,040 eV/particle 17,390 eV/particle 17,770 eV/particle 18,120 eV/particle 20,210 eV/particle 20,650 eV/particle 21,200 eV/particle 21,556.6 eV/particle 86,438.9 eV/particle 88,113.3 eV/particle

enthalpy of vaporization	604 kJ/mol
enthalpy of fusion	27.61 kJ/mol
standard enthalpy of formation	669 kJ/mol
Electron

plisgyn yr electron	2, 8, 18, 32, 15, 2

valence electron	2 ⓘ

trefn yr electronnau	[Xe] 4f¹⁴ 5d⁷ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 5d⁷ 6s²

Cyflwr ocsidiad	-3, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Electronegatifedd	9.96 eV/particle 0.25106 2.2
Electrophilicity Index	1.872465121129725 eV/particle
cyflwr sylfaenol mater

cyflwr mater
gaseous state of matter
Boiling Point	4,701.15 K
Melting Point	2,719.15 K
critical pressure
critical temperature
triple point
appearance
lliw	Black #ff1493 #175487 #175487
appearance	silvery white
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity	147 W/(m K)
thermal expansion	0.0000064 1/K
molar heat capacity	25.1 J/(mol K)
Specific Heat Capacity	0.131 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
dargludedd trydanol	21 MS/m
Gwrthedd	0.00000004699999999998 Ω*m
superconductivity	0.11 K
magnetism
type	paramagnetic
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 Structure	{ERROR}
lattice constant	3.84 Å
Lattice Angles	π/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness	1,670 MPa 6.5 MPa 1,760 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
Category	Actinides, Transition metals
CAS Group	VIIIA
IUPAC Group	VIII
Glawe Number	62
Mendeleev Number	65
Pettifor Number	65
Geochemical Class	noble metal
Goldschmidt classification	siderophile

other

Gas Basicity
polarizability	54 ± 7 a₀
C6 Dispersion Coefficient	522 a₀
allotrope
Neutron cross section	425
Neutron Mass Absorption	0.081
quantum number	4F9/2
space group	225 (Fm_3m)

Isotopes of Iridium

Stable Isotopes	2
Unstable Isotopes	41
Natural Isotopes	2

¹⁶³Ir

Rhif màs	163
neutron number	86
Relative Atomic Mass	162.994299 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod
parity	+

decay mode	intensity
p (proton emission)

¹⁶⁴Ir

Rhif màs	164
neutron number	87
Relative Atomic Mass	163.991966 ± 0.000339 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	2
nuclear quadrupole moment
dyddiad darganfod
parity	-

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

¹⁶⁵Ir

Rhif màs	165
neutron number	88
Relative Atomic Mass	164.987552 ± 0.00017 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod
parity	+

decay mode	intensity
p (proton emission)
α (α emission)

¹⁶⁶Ir

Rhif màs	166
neutron number	89
Relative Atomic Mass	165.985716 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	10.5 ± 2.2 ms
spin	2
nuclear quadrupole moment
dyddiad darganfod	1981
parity

decay mode	intensity
α (α emission)	93%
p (proton emission)	7%

¹⁶⁷Ir

Rhif màs	167
neutron number	90
Relative Atomic Mass	166.981671973 ± 0.000019694 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	29.3 ± 0.6 ms
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1981
parity	+

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

¹⁶⁸Ir

Rhif màs	168
neutron number	91
Relative Atomic Mass	167.979960978 ± 0.000059277 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	230 ± 50 ms
spin	2
nuclear quadrupole moment
dyddiad darganfod	1978
parity

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

¹⁶⁹Ir

Rhif màs	169
neutron number	92
Relative Atomic Mass	168.976281743 ± 0.00002502 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	353 ± 4 ms
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1978
parity	+

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

¹⁷⁰Ir

Rhif màs	170
neutron number	93
Relative Atomic Mass	169.975113 ± 0.000109 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	910 ± 150 ms
spin	3
nuclear quadrupole moment
dyddiad darganfod	1977
parity	-

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

¹⁷¹Ir

Rhif màs	171
neutron number	94
Relative Atomic Mass	170.97164552 ± 0.000041295 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.1 ± 0.3 s
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1967
parity	+

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

¹⁷²Ir

Rhif màs	172
neutron number	95
Relative Atomic Mass	171.970607035 ± 0.000034785 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	4.4 ± 0.3 s
spin	3
nuclear quadrupole moment
dyddiad darganfod	1967
parity	-

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

¹⁷³Ir

Rhif màs	173
neutron number	96
Relative Atomic Mass	172.967505477 ± 0.000011316 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	9 ± 0.8 s
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1967
parity	+

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

¹⁷⁴Ir

Rhif màs	174
neutron number	97
Relative Atomic Mass	173.966949939 ± 0.000012046 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	7.9 ± 0.6 s
spin	2
nuclear quadrupole moment
dyddiad darganfod	1967
parity	+

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

¹⁷⁵Ir

Rhif màs	175
neutron number	98
Relative Atomic Mass	174.964149519 ± 0.000013295 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	9 ± 2 s
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1967
parity	+

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

¹⁷⁶Ir

Rhif màs	176
neutron number	99
Relative Atomic Mass	175.963626261 ± 0.000008679 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	8.7 ± 0.5 s
spin	3
nuclear quadrupole moment
dyddiad darganfod	1967
parity	+

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

¹⁷⁷Ir

Rhif màs	177
neutron number	100
Relative Atomic Mass	176.9613015 ± 0.000021213 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	29.8 ± 1.7 s
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1967
parity	-

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

¹⁷⁸Ir

Rhif màs	178
neutron number	101
Relative Atomic Mass	177.961079395 ± 0.000020204 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	12 ± 2 s
spin	3
nuclear quadrupole moment
dyddiad darganfod	1972
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁷⁹Ir

Rhif màs	179
neutron number	102
Relative Atomic Mass	178.959117594 ± 0.000010489 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	79 ± 1 s
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1992
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁰Ir

Rhif màs	180
neutron number	103
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
spin	5
nuclear quadrupole moment
dyddiad darganfod	1972
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸¹Ir

Rhif màs	181
neutron number	104
Relative Atomic Mass	180.957634691 ± 0.000005631 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	4.9 ± 0.15 m
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1972
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸²Ir

Rhif màs	182
neutron number	105
Relative Atomic Mass	181.958076296 ± 0.000022509 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	15 ± 1 m
spin	3
nuclear quadrupole moment
dyddiad darganfod	1961
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸³Ir

Rhif màs	183
neutron number	106
Relative Atomic Mass	182.956841231 ± 0.000026486 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	58 ± 5 m
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1961
parity	-

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

¹⁸⁴Ir

Rhif màs	184
neutron number	107
Relative Atomic Mass	183.957476 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.09 ± 0.03 h
spin	5
nuclear quadrupole moment	2.41 ± 0.03
dyddiad darganfod	1960
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁵Ir

Rhif màs	185
neutron number	108
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
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1958
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁶Ir

Rhif màs	186
neutron number	109
Relative Atomic Mass	185.957946754 ± 0.00001774 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	16.64 ± 0.03 h
spin	5
nuclear quadrupole moment	-2.55 ± 0.03
dyddiad darganfod	1958
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁷Ir

Rhif màs	187
neutron number	110
Relative Atomic Mass	186.957542 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	10.5 ± 0.3 h
spin	3/2
nuclear quadrupole moment	0.941 ± 0.011
dyddiad darganfod	1958
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁸Ir

Rhif màs	188
neutron number	111
Relative Atomic Mass	187.958834999 ± 0.000010116 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	41.5 ± 0.5 h
spin	1
nuclear quadrupole moment	0.484 ± 0.006
dyddiad darganfod	1950
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁸⁹Ir

Rhif màs	189
neutron number	112
Relative Atomic Mass	188.958722602 ± 0.0000135 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	13.2 ± 0.1 d
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1955
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁹⁰Ir

Rhif màs	190
neutron number	113
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
spin	4
nuclear quadrupole moment	2.87 ± 0.16
dyddiad darganfod	1947
parity	-

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

¹⁹¹Ir

Rhif màs	191
neutron number	114
Relative Atomic Mass	190.960591455 ± 0.000001406 Da
g-factor	0.10013333333333 ± 0.0004
natural abundance	37.3 ± 0.2
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0.816 ± 0.009
dyddiad darganfod	1935
parity	+

¹⁹²Ir

Rhif màs	192
neutron number	115
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
spin	4
nuclear quadrupole moment	2.15 ± 0.06
dyddiad darganfod	1937
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	95.24%
ϵ (electron capture)	4.76%

¹⁹³Ir

Rhif màs	193
neutron number	116
Relative Atomic Mass	192.962923753 ± 0.000001425 Da
g-factor	0.10866666666667 ± 0.0004
natural abundance	62.7 ± 0.2
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0.751 ± 0.009
dyddiad darganfod	1935
parity	+

¹⁹⁴Ir

Rhif màs	194
neutron number	117
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
spin	1
nuclear quadrupole moment	0.339 ± 0.012
dyddiad darganfod	1937
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁹⁵Ir

Rhif màs	195
neutron number	118
Relative Atomic Mass	194.965976898 ± 0.000001431 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.29 ± 0.17 h
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1952
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁹⁶Ir

Rhif màs	196
neutron number	119
Relative Atomic Mass	195.968399669 ± 0.000041239 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	52 ± 1.1 s
spin	1
nuclear quadrupole moment
dyddiad darganfod	1966
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁹⁷Ir

Rhif màs	197
neutron number	120
Relative Atomic Mass	196.969657217 ± 0.000021588 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	5.8 ± 0.5 m
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1952
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁹⁸Ir

Rhif màs	198
neutron number	121
Relative Atomic Mass	197.972399 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	8.7 ± 0.4 s
spin	1
nuclear quadrupole moment
dyddiad darganfod	1973
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁹⁹Ir

Rhif màs	199
neutron number	122
Relative Atomic Mass	198.973807097 ± 0.000044073 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	7 ± 5 s
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1993
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁰⁰Ir

Rhif màs	200
neutron number	123
Relative Atomic Mass	199.976844 ± 0.00021 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	43 ± 6 s
spin	2
nuclear quadrupole moment
dyddiad darganfod	2008
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

²⁰¹Ir

Rhif màs	201
neutron number	124
Relative Atomic Mass	200.978701 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	21 ± 5 s
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	2008
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁰²Ir

Rhif màs	202
neutron number	125
Relative Atomic Mass	201.982136 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	11 ± 3 s
spin	2
nuclear quadrupole moment
dyddiad darganfod	2008
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁰³Ir

Rhif màs	203
neutron number	126
Relative Atomic Mass	202.984573 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	2009
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²⁰⁴Ir

Rhif màs	204
neutron number	127
Relative Atomic Mass	203.989726 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod	2011
parity

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

²⁰⁵Ir

Rhif màs	205
neutron number	128
Relative Atomic Mass	204.993988 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	2012
parity	+

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

hanes

darganfyddwr neu ddyfeisiwr	S.Tenant, A.F.Fourcory, L.N.Vauquelin, H.V.Collet-Descoltils
man darganfod	England/France
dyddiad darganfod	1804
geirdarddiad	Latin: iris (rainbow).
ynganiad	i-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

1	s	1.4881
2	p	4.4624
2	s	20.1102
3	d	13.514
3	p	21.9311
3	s	22.7942
4	d	37.2628
4	f	38.6552
4	p	35.086
4	s	34.152
5	d	58.304
5	p	53.339
5	s	51.1545
6	s	66.4334

Iridi on ChemicalAid

Iridi (Ir)

Nodwedd Ffisegol

Nodwedd Gemegol

other

Isotopes of Iridium

163Ir

164Ir

165Ir

166Ir

167Ir

168Ir

169Ir

170Ir

171Ir

172Ir

173Ir

174Ir

175Ir

176Ir

177Ir

178Ir

179Ir

180Ir

181Ir

182Ir

183Ir

184Ir

185Ir

186Ir

187Ir

188Ir

189Ir

190Ir

191Ir

192Ir

193Ir

194Ir

195Ir

196Ir

197Ir

198Ir

199Ir

200Ir

201Ir

202Ir

203Ir

204Ir

205Ir

hanes

source

Nuclear Screening Constants

¹⁶³Ir

¹⁶⁴Ir

¹⁶⁵Ir

¹⁶⁶Ir

¹⁶⁷Ir

¹⁶⁸Ir

¹⁶⁹Ir

¹⁷⁰Ir

¹⁷¹Ir

¹⁷²Ir

¹⁷³Ir

¹⁷⁴Ir

¹⁷⁵Ir

¹⁷⁶Ir

¹⁷⁷Ir

¹⁷⁸Ir

¹⁷⁹Ir

¹⁸⁰Ir

¹⁸¹Ir

¹⁸²Ir

¹⁸³Ir

¹⁸⁴Ir

¹⁸⁵Ir

¹⁸⁶Ir

¹⁸⁷Ir

¹⁸⁸Ir

¹⁸⁹Ir

¹⁹⁰Ir

¹⁹¹Ir

¹⁹²Ir

¹⁹³Ir

¹⁹⁴Ir

¹⁹⁵Ir

¹⁹⁶Ir

¹⁹⁷Ir

¹⁹⁸Ir

¹⁹⁹Ir

²⁰⁰Ir

²⁰¹Ir

²⁰²Ir

²⁰³Ir

²⁰⁴Ir

²⁰⁵Ir