Periodic Table Element Comparison: Compare Elements - Uranium vs Iridium

Compare Uranium and Iridium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Uranium vs Iridium with most reliable information about their properties, attributes, facts, uses etc. You can compare U vs Ir on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. Uranium and Iridium comparison table on more than 90 properties.

Uranium and Iridium Comparison

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1
1
H
Hydrogen
1.008

Atomic #

Electronic Shell #

Symbol
Name
Atomic Weight
HGas
HgLiquid
CSolid
Metals
Metalloids
NonMetals
Alkali metals
Alkali earth metals
Lanthanoids
Transition metals
Post-transition metals
Other nonmetals
Halogens
Nobel gas
Actinoids
2
He
Helium
4.003
2
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
3
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.085
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
4
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.941
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.640
33
As
Arsenic
74.922
34
Se
Selenium
78.960
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.620
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.940
43
Tc
Technetium
98
44
Ru
Ruthenium
101.070
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.420
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.600
53
I
Iodine
126.904
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.905
56
Ba
Barium
137.327
57 - 71
La - Lu
Lanthanides
72
Hf
Hafnium
178.490
73
Ta
Tantalum
180.948
74
W
Tungsten
183.840
75
Re
Rhenium
186.207
76
Os
Osmium
190.230
77
Ir
Iridium
192.217
78
Pt
Platinum
195.078
79
Au
Gold
196.967
80
Hg
Mercury
200.590
81
Tl
Thallium
204.383
82
Pb
Lead
207.200
83
Bi
Bismuth
208.980
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
7
87
Fr
Francium
223
88
Ra
Radium
226
89 - 103
Ac - Lr
Actinides
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
266
107
Bh
Bohrium
264
108
Hs
Hassium
269
109
Mt
Meitnerium
268
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
272
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
292
117
Ts
Tennessine
294
118
Og
Oganesson
294
Lanthanides
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.240
61
Pm
Promethium
145
62
Sm
Samarium
150.360
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.250
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.930
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.040
71
Lu
Lutetium
174.967
Actinides
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262

Facts

NameUraniumIridium
Atomic Number9277
Atomic SymbolUIr
Atomic Weight238.02891 192.217
Phase at STPSolid Solid
ColorSilver Silver
Metallic ClassificationActinide Transition Metal
Group in Periodic Tablegroup - group 9
Group Namecobalt family
Period in Periodic Tableperiod 7 period 6
Block in Periodic Tablef -blockd -block
Electronic Configuration[Rn] 5f3 6d1 7s2 [Xe] 4f14 5d7 6s2
Electronic Shell Structure (Electrons per shell)2, 8, 18, 32, 21, 9, 22, 8, 18, 32, 15, 2
Melting Point1408 K2739 K
Boiling Point4200 K4701 K
CAS NumberCAS7440-61-1 CAS7439-88-5
Neighborhood ElementsNeighborhood Elements of UraniumNeighborhood Elements of Iridium

History

ParameterUraniumIridium
HistoryThe element Uranium was discovered by H. Klaproth in year 1789 in Germany. Uranium derived its name from Uranus, the seventh planet in the Solar System.The element Iridium was discovered by S. Tennant in year 1803 in France and United Kingdom. Iridium derived its name from Iris, the Greek goddess of the rainbow.
DiscoveryH. Klaproth (1789)S. Tennant (1803)
IsolatedE.-M. Péligot (1841)S. Tennant (1803)

Presence: Abundance in Nature and Around Us

Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)

PropertyUraniumIridium
Abundance in Universe0.2 / 0.0012 / 0.01
Abundance in Sun1 / 0.0042 / 0.01
Abundance in Meteorites10 / 1550 / 60
Abundance in Earth's Crust1800 / 1500.4 / 0.05
Abundance in Oceans3.3 / 0.086- / -
Abundance in Humans1 / 0.03- / -

Crystal Structure and Atomic Structure

PropertyUraniumIridium
Atomic Volume12.495 cm3/mol8.5203 cm3/mol
Atomic Radius175 pm180 pm
Covalent Radius- 137 pm
Van der Waals Radius186 pm-

Atomic Spectrum - Spectral Lines

Emission SpectrumEmission Spectrum of Uranium | SchoolMyKidsEmission Spectrum of Iridium | SchoolMyKids
Absorption SpectrumAbsorption Spectrum of Uranium | SchoolMyKidsAbsorption Spectrum of Iridium | SchoolMyKids
Lattice Constant285.37, 586.95, 495.48 pm383.9, 383.9, 383.9 pm
Lattice Angleπ/2, π/2, π/2π/2, π/2, π/2
Space Group NameCmcm Fm_ 3m
Space Group Number63 225
Crystal Structure

Base Centered Orthorhombic

92 U Uranium - Crystal Structure | SchoolMyKids

Face Centered Cubic

77 Ir Iridium - Crystal Structure | SchoolMyKids

Atomic and Orbital Properties

PropertyUraniumIridium
Atomic Number9277
Number of Electrons (with no charge)9277
Number of Protons9277
Mass Number238.02891192.217
Number of Neutrons146115
Shell structure (Electrons per energy level)2, 8, 18, 32, 21, 9, 22, 8, 18, 32, 15, 2
Electron Configuration[Rn] 5f3 6d1 7s2 [Xe] 4f14 5d7 6s2
Valence Electrons5f3 6d1 7s2 5d7 6s2
Oxidation State4, 63, 4
Atomic Term Symbol (Quantum Numbers)5L6 4F9/2
Shell structure92 U Uranium Electron Shell Structure | SchoolMyKids77 Ir Iridium Electron Shell Structure | SchoolMyKids

Isotopes and Nuclear Properties

Uranium has 0 stable naturally occuring isotopes while Iridium has 2 stable naturally occuring isotopes.

ParameterUraniumIridium
Known Isotopes217U, 218U, 219U, 220U, 221U, 222U, 223U, 224U, 225U, 226U, 227U, 228U, 229U, 230U, 231U, 232U, 233U, 234U, 235U, 236U, 237U, 238U, 239U, 240U, 241U, 242U164Ir, 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
Stable Isotopes

-

Naturally occurring stable isotopes:

191Ir, 193Ir

Neutron Cross Section 7.57 425
Neutron Mass Absorption 0.0005 0.08

Chemical Properties: Ionization Energies and electron affinity

PropertyUraniumIridium
Valence or Valency6 6
Electronegativity1.38 Pauling Scale2.2 Pauling Scale
Electron Affinity- 151 kJ/mol
Ionization Energies
1st: 597.6 kJ/mol
2nd: 1420 kJ/mol
1st: 880 kJ/mol
2nd: 1600 kJ/mol

Physical Properties

PropertyUraniumIridium
Density19.05 g/cm322.56 g/cm3
Molar Volume12.495 cm3/mol8.5203 cm3/mol

Elastic Properties

Young Modulus208 528
Shear Modulus111 GPa210 GPa
Bulk Modulus100 GPa320 GPa
Poisson Ratio0.23 0.26

Hardness - Tests to Measure of Hardness of Element

Mohs Hardness6 MPa6.5 MPa
Vickers Hardness1960 MPa1760 MPa
Brinell Hardness2400 MPa1670 MPa

Electrical Properties

Electrical Conductivity3600000 S/m21000000 S/m
Resistivity 2.79e-7 m Ω4.7e-8 m Ω
Superconducting Point0.68 0.11

Heat and Conduction Properties

Thermal Conductivity27 W/(m K)150 W/(m K)
Thermal Expansion0.0000139 /K0.0000064 /K

Magnetic Properties

Magnetic TypeParamagnetic Paramagnetic
Curie Point- -
Mass Magnetic Susceptibility2.16e-8 m3/kg1.67e-9 m3/kg
Molar Magnetic Susceptibility5.14e-9 m3/mol3.21e-10 m3/mol
Volume Magnetic Susceptibility0.000411 0.0000377

Optical Properties

Refractive Index- -

Acoustic Properties

Speed of Sound3155 m/s4825 m/s

Thermal Properties - Enthalpies and thermodynamics

PropertyUraniumIridium
Melting Point1408 K2739 K
Boiling Point4200 K4701 K
Critical Temperature- -
Superconducting Point0.68 0.11

Enthalpies

Heat of Fusion14 kJ/mol26 kJ/mol
Heat of Vaporization420 kJ/mol560 kJ/mol
Heat of Combustion- -

Regulatory and Health - Health and Safety Parameters and Guidelines

ParameterUraniumIridium
CAS NumberCAS7440-61-1 CAS7439-88-5
RTECS NumberRTECSYR3490000 -
DOT Hazard Class7 4.1
DOT Numbers2979 3089
EU NumberEU231-170-6 -
NFPA Fire Rating- -
NFPA Health Rating- -
NFPA Reactivity Rating- -
NFPA Hazards- -
AutoIgnition Point- -
Flashpoint- -

Compare With Other Elements

Compare Uranium and Iridium with other elements of the periodic table.

Compare Uranium with all Group elements

Compare Uranium with all Period 7 elements

Compare Uranium with all Actinide elements

Compare Iridium with all Group 9 elements

Compare Iridium with all Period 6 elements

Compare Iridium with all Transition Metal elements