1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Transition Metal
Alkaline Earth
1.6 CAS Number
74401667440144
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Rhodium is the rarest element out of all non-radioactive metals on the earth .
- Rhodium is one of the most durable and hard metal, which also have high reflectance.
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
2.2 Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining
Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
William Hyde Wollaston
Not Available
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.3 Abundance In Sun
~0.0000002 %~-9999 %
1E-08
0.1
1.2.2 Abundance In Meteorites
1.3.2 Abundance In Earth's Crust
1.6.1 Abundance In Oceans
1.6.3 Abundance In Humans
2 Uses
2.1 Uses & Benefits
- Rhodium metal is mainly used in catalytic converters for cars as it reduces nitrogen oxides in exhaust gases.
- It is used as an industrial catalyst for nitric acid, acetic acid, hydrogenation reaction, etc.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
2.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
NA
2.1.2 Medical Uses
NA
Pharmaceutical Industry
2.1.3 Other Uses
2.2 Biological Properties
2.2.1 Toxicity
2.2.2 Present in Human Body
2.2.4 In Blood
3.4.2 In Bone
4 Physical
4.1 Melting Point
1,966.00 °C700.00 °C
27
3410
4.2 Boiling Point
3,727.00 °C1,737.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery White
Silvery White
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.4 Brinell Hardness
4.4.10 Vickers Hardness
5.3 Speed of Sound
5.4 Optical Properties
5.4.1 Refractive Index
6.1.1 Reflectivity
6.3 Allotropes
6.3.1 α Allotropes
Not Available
Not Available
6.3.2 β Allotropes
Not Available
Not Available
6.3.3 γ Allotropes
Not Available
Not Available
7 Chemical
7.1 Chemical Formula
7.2 Isotopes
7.2.1 Known Isotopes
7.5 Electronegativity
7.5.1 Pauling Electronegativity
8.1.1 Sanderson Electronegativity
8.3.1 Allred Rochow Electronegativity
8.4.2 Mulliken-Jaffe Electronegativity
8.4.5 Allen Electronegativity
8.6 Electropositivity
8.6.1 Pauling Electropositivity
8.9 Ionization Energies
8.9.1 1st Energy Level
719.70 kJ/mol509.30 kJ/mol
375.7
26130
9.2.3 2nd Energy Level
1,740.00 kJ/mol979.00 kJ/mol
710.2162
28750
9.2.5 3rd Energy Level
2,997.00 kJ/molNA
1600
34230
9.4.1 4th Energy Level
9.5.1 5th Energy Level
9.5.3 6th Energy Level
9.7.2 7th Energy level
9.8.1 8th Energy Level
9.9.1 9th Energy Level
10.1.2 10th Energy Level
10.2.2 11th Energy Level
10.2.5 12th Energy Level
10.3.1 13th Energy Level
10.5.2 14th Energy Level
10.5.4 15th Energy Level
10.5.7 16th Energy Level
10.6.3 17th Energy Level
10.6.6 18th Energy Level
10.6.8 19th Energy Level
10.6.11 20th Energy Level
10.6.12 21st Energy Level
10.7.2 22nd Energy Level
11.1.2 23rd Energy Level
11.1.3 24th Energy Level
11.1.7 25th Energy Level
11.1.9 26th Energy Level
11.1.11 27th Energy Level
11.2.3 28th Energy Level
11.2.5 29th Energy Level
11.2.8 30th Energy Level
11.3 Electrochemical Equivalent
1.28 g/amp-hr4.22 g/amp-hr
0.16812
8.3209
11.4 Electron Work Function
12.2 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes
Ionization, Radioactive Isotopes, Radioactivity
13 Atomic
13.1 Atomic Number
13.3 Electron Configuration
13.4 Crystal Structure
Face Centered Cubic (FCC)
Body Centered Cubic (BCC)
13.4.1 Crystal Lattice
13.5 Atom
13.5.1 Number of Protons
13.6.1 Number of Neutrons
13.7.2 Number of Electrons
13.9 Radius of an Atom
13.9.1 Atomic Radius
13.9.4 Covalent Radius
142.00 pm221.00 pm
96
260
13.9.7 Van der Waals Radius
200.00 pm283.00 pm
139
348
13.10 Atomic Weight
102.91 amu226.00 amu
6.94
294
13.13 Atomic Volume
8.30 cm3/mol45.20 cm3/mol
1.39
71.07
13.15 Adjacent Atomic Numbers
13.15.1 Previous Element
13.15.2 Next Element
13.16 Valence Electron Potential
64.00 (-eV)20.10 (-eV)
8
392.42
14.2 Lattice Constant
380.34 pm514.80 pm
228.58
891.25
14.6 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
14.7 Lattice C/A Ratio
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
12.41 g/cm35.50 g/cm3
0.534
40.7
15.1.2 Density When Liquid (at m.p.)
15.2 Tensile Strength
15.4 Viscosity
15.5 Vapor Pressure
15.5.1 Vapor Pressure at 1000 K
15.5.3 Vapor Pressure at 2000 K
15.7 Elasticity properties
15.7.1 Shear Modulus
15.8.1 Bulk Modulus
15.10.1 Young's Modulus
15.12 Poisson Ratio
15.15 Other Mechanical Properties
16 Magnetic
16.1 Magnetic Characteristics
16.1.1 Specific Gravity
17.1.2 Magnetic Ordering
17.1.3 Permeability
17.1.5 Susceptibility
17.2 Electrical Properties
17.2.1 Electrical Property
17.2.2 Resistivity
43.30 nΩ·m100.00 nΩ·m
0.18
961
17.3.1 Electrical Conductivity
0.21 106/cm ΩNA
0.00666
0.63
17.5.2 Electron Affinity
18 Thermal
18.1 Specific Heat
0.24 J/(kg K)0.12 J/(kg K)
0.11
3.6
18.3 Molar Heat Capacity
24.98 J/mol·KNA
16.443
62.7
18.4 Thermal Conductivity
150.00 W/m·K18.60 W/m·K
6.3
429
18.5 Critical Temperature
18.7 Thermal Expansion
19.2 Enthalpy
19.2.1 Enthalpy of Vaporization
495.40 kJ/molNA
7.32
799.1
19.2.4 Enthalpy of Fusion
19.3.3 Enthalpy of Atomization
556.50 kJ/mol163.00 kJ/mol
61.5
837
19.4 Standard Molar Entropy
31.50 J/mol.K71.00 J/mol.K
9.5
198.1