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Periodic Table Element Comparison: Compare Elements - Osmium vs Rhodium

Compare Osmium and Rhodium

Compare Osmium and Rhodium 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 Osmium vs Rhodium with most reliable information about their properties, attributes, facts, uses etc. You can compare Os vs Rh on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

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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
277
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

NameOsmiumRhodium
Atomic Number7645
Atomic SymbolOsRh
Atomic Weight190.23 102.9055
Phase at STPSolid Solid
ColorSlateGray Silver
Metallic ClassificationTransition Metal Transition Metal
Group in Periodic Tablegroup 8 group 9
Group Nameiron familycobalt family
Period in Periodic Tableperiod 6 period 5
Block in Periodic Tabled -blockd -block
Electronic Configuration[Xe] 4f14 5d6 6s2 [Kr] 4d8 5s1
Electronic Shell Structure (Electrons per shell)2, 8, 18, 32, 14, 22, 8, 18, 16, 1
Melting Point3306 K2237 K
Boiling Point5285 K3968 K
CAS NumberCAS7440-04-2 CAS7440-16-6
Neighborhood ElementsNeighborhood Elements of OsmiumNeighborhood Elements of Rhodium

History

HistoryThe element Osmium was discovered by S. Tennant in year 1803 in United Kingdom. Osmium derived its name from the Greek osmè, meaning 'smell'.The element Rhodium was discovered by H. Wollaston in year 1804 in United Kingdom. Rhodium derived its name from the Greek rhodos, meaning 'rose coloured'.
DiscoveryS. Tennant (1803)H. Wollaston (1804)
IsolatedS. Tennant (1803)H. Wollaston (1804)

Presence: Abundance in Nature and Around Us

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

Abundance in Universe3 / 0.020.6 / 0.007
Abundance in Sun2 / 0.022 / 0.02
Abundance in Meteorites670 / 70180 / 40
Abundance in Earth's Crust1.8 / 0.20.70 / 0.1
Abundance in Oceans- / -- / -
Abundance in Humans- / -- / -

Crystal Structure and Atomic Structure

Atomic Volume8.421 cm3/mol8.2655 cm3/mol
Atomic Radius185 pm173 pm
Covalent Radius128 pm135 pm
Van der Waals Radius- -
Atomic SpectrumAtomic Spectrum of Osmium | SchoolMyKidsAtomic Spectrum of Rhodium | SchoolMyKids
Lattice Constant273.44, 273.44, 431.73 pm380.34, 380.34, 380.34 pm
Lattice Angleπ/2, π/2, 2 π/3π/2, π/2, π/2
Space Group NameP63/mmc Fm_ 3m
Space Group Number194 225
Crystal Structure

Simple Hexagonal

76 Os Osmium - Crystal Structure | SchoolMyKids

Face Centered Cubic

45 Rh Rhodium - Crystal Structure | SchoolMyKids

Atomic and Orbital Properties

Atomic Number7645
Number of Electrons (with no charge)7645
Number of Protons7645
Mass Number190.23102.9055
Number of Neutrons11458
Shell structure (Electrons per energy level)2, 8, 18, 32, 14, 22, 8, 18, 16, 1
Electron Configuration[Xe] 4f14 5d6 6s2 [Kr] 4d8 5s1
Valence Electrons5d6 6s2 4d8 5s1
Oxidation State43
Atomic Term Symbol (Quantum Numbers)5D4 4F9/2
Shell structure76 Os Osmium - Electron Shell Structure | SchoolMyKids45 Rh Rhodium - Electron Shell Structure | SchoolMyKids

Isotopes and Nuclear Properties

Osmium has 6 stable naturally occuring isotopes while Rhodium has 1 stable naturally occuring isotopes.

Known Isotopes162Os, 163Os, 164Os, 165Os, 166Os, 167Os, 168Os, 169Os, 170Os, 171Os, 172Os, 173Os, 174Os, 175Os, 176Os, 177Os, 178Os, 179Os, 180Os, 181Os, 182Os, 183Os, 184Os, 185Os, 186Os, 187Os, 188Os, 189Os, 190Os, 191Os, 192Os, 193Os, 194Os, 195Os, 196Os89Rh, 90Rh, 91Rh, 92Rh, 93Rh, 94Rh, 95Rh, 96Rh, 97Rh, 98Rh, 99Rh, 100Rh, 101Rh, 102Rh, 103Rh, 104Rh, 105Rh, 106Rh, 107Rh, 108Rh, 109Rh, 110Rh, 111Rh, 112Rh, 113Rh, 114Rh, 115Rh, 116Rh, 117Rh, 118Rh, 119Rh, 120Rh, 121Rh, 122Rh
Stable IsotopesNaturally occurring stable isotopes:

184Os, 187Os, 188Os, 189Os, 190Os, 192Os

Naturally occurring stable isotopes:

103Rh

Neutron Cross Section 15 145
Neutron Mass Absorption 0.0023 0.063

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency6 6
Electronegativity2.2 Pauling Scale2.28 Pauling Scale
Electron Affinity106.1 kJ/mol109.7 kJ/mol
Ionization Energies
1st: 840 kJ/mol
2nd: 1600 kJ/mol
1st: 719.7 kJ/mol
2nd: 1740 kJ/mol
3rd: 2997 kJ/mol

Physical Properties

Density22.59 g/cm312.45 g/cm3
Molar Volume8.421 cm3/mol8.2655 cm3/mol

Elastic Properties

Young Modulus- 275
Shear Modulus222 GPa150 GPa
Bulk Modulus- 380 GPa
Poisson Ratio0.25 0.26

Hardness - Tests to Measure of Hardness of Element

Mohs Hardness7 MPa6 MPa
Vickers Hardness- 1246 MPa
Brinell Hardness3920 MPa1100 MPa

Electrical Properties

Electrical Conductivity12000000 S/m23000000 S/m
Resistivity 8.1e-8 m Ω4.3e-8 m Ω
Superconducting Point0.66 -

Heat and Conduction Properties

Thermal Conductivity88 W/(m K)150 W/(m K)
Thermal Expansion0.0000051 /K0.0000082 /K

Magnetic Properties

Magnetic TypeParamagnetic Paramagnetic
Curie Point- -
Mass Magnetic Susceptibility6e-10 m3/kg1.36e-8 m3/kg
Molar Magnetic Susceptibility1.1e-10 m3/mol1.4e-9 m3/mol
Volume Magnetic Susceptibility0.000014 0.0001693

Optical Properties

Refractive Index- -

Acoustic Properties

Speed of Sound4940 m/s4700 m/s

Thermal Properties - Enthalpies and thermodynamics

Melting Point3306 K2237 K
Boiling Point5285 K3968 K
Critical Temperature- -
Superconducting Point0.66 -

Enthalpies

Heat of Fusion31 kJ/mol21.7 kJ/mol
Heat of Vaporization630 kJ/mol495 kJ/mol
Heat of Combustion- -

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS NumberCAS7440-04-2 CAS7440-16-6
RTECS NumberRTECSRN1100000 RTECSVI9069000
DOT Hazard Class4.1 4.1
DOT Numbers3089 3089
EU Number- -
NFPA Fire Rating4 -
NFPA Hazards- -
NFPA Health Rating- -
NFPA Reactivity Rating1 -
AutoIgnition Point- -
Flashpoint- -

Compare With Other Elements

Compare Osmium with all Group 8 elements

Compare Osmium with all Period 6 elements

Compare Osmium with all Transition Metal elements

Compare Rhodium with all Group 9 elements

Compare Rhodium with all Period 5 elements

Compare Rhodium with all Transition Metal elements