Rhodium Properties

Rhodium

Physical

Melting Point

1,966.00 °C 12

Boiling Point

3,727.00 °C 17

Hardness

Mohs Hardness

6.00 6

Brinell Hardness

980.00 MPa 9

Vickers Hardness

1,100.00 MPa 9

Optical Properties

Refractive Index

Not Available 0

Reflectivity

84.00 % 4

Speed of Sound

4,700.00 m/s 15

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Rh 0

Isotopes

Known Isotopes

16 23

Electronegativity

Pauling Electronegativity

2.28 3

Sanderson Electronegativity

Not Available 0

Allred Rochow Electronegativity

1.45 16

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.56 24

Electropositivity

Pauling Electropositivity

1.72 50

Ionization Energies

1st Energy Level

719.70 kJ/mol 29

2nd Energy Level

1,740.00 kJ/mol 26

3rd Energy Level

2,997.00 kJ/mol 27

Electrochemical Equivalent

1.28 g/amp-hr 50

Electron Work Function

4.98 eV 6

Other Chemical Properties

Anti Corrosion, Ionization, Radioactive Isotopes 0

Mechanical

Density

Density At Room Temperature

12.41 g/cm³ 28

Density When Liquid (at m.p.)

10.70 g/cm3 14

Vapor Pressure

Vapor Pressure at 1000 K

Not Available 0

Vapor Pressure at 2000 K

0.02 (Pa) 19

Tensile Strength

951.00 MPa 5

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

150.00 GPa 6

Bulk Modulus

275.00 GPa 5

Young's Modulus

380.00 GPa 5

Poisson Ratio

0.26 22

Other Mechanical Properties

Malleable 0

Periodic Table

Symbol

Rh 0

Group Number

9 9

Period Number

5 3

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

45 67

Atomic Weight

102.91 amu 61

Atomic Volume

8.30 cm3/mol 59

Electron Configuration

[Kr] 4d⁸ 5s¹ 0

Valence Electron Potential

64.00 (-eV) 22

Atom

Number of Protons

45 66

Number of Neutrons

58 49

Number of Electrons

45 66

Crystal Structure

Face Centered Cubic (FCC) 0

Crystal Lattice

FCC-Crystal-Structure-of-Rhodium.jpg#100 0

Radius of an Atom

Atomic Radius

134.00 pm 43

Covalent Radius

142.00 pm 42

Van der Waals Radius

200.00 pm 28

Lattice Constant

380.34 pm 27

Lattice Angles

π/2, π/2, π/2 0

Lattice C/A Ratio

Not Available 0

Adjacent Atomic Numbers

Next Element

1 0

Previous Element

61 0

Magnetic

Electrical Properties

Resistivity

43.30 nΩ·m 46

Electrical Conductivity

0.21 10⁶/cm Ω 8

Electron Affinity

109.70 kJ/mol 7

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

12.41 20

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.24 J/(kg K) 22

Thermal Conductivity

150.00 W/m·K 9

Critical Temperature

Not Available 0

Molar Heat Capacity

24.98 J/mol·K 45

Thermal Expansion

8.20 µm/(m·K) 47

Standard Molar Entropy

31.50 J/mol.K 49

Enthalpy

Enthalpy of Vaporization

495.40 kJ/mol 12

Enthalpy of Fusion

21.76 kJ/mol 10

Enthalpy of Atomization

556.50 kJ/mol 12

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Rhodium Properties

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