Ruthenium Properties

Ruthenium

Physical

Melting Point

2,250.00 °C 8

Boiling Point

3,900.00 °C 14

Hardness

Mohs Hardness

6.50 5

Brinell Hardness

2,160.00 MPa 3

Vickers Hardness

Not Available 0

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

5,970.00 m/s 4

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Ru 0

Isotopes

Known Isotopes

26 13

Electronegativity

Pauling Electronegativity

2.20 4

Sanderson Electronegativity

Not Available 0

Allred Rochow Electronegativity

1.42 18

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.54 25

Electropositivity

Pauling Electropositivity

1.80 49

Ionization Energies

1st Energy Level

710.20 kJ/mol 32

2nd Energy Level

710.22 kJ/mol 83

3rd Energy Level

2,747.00 kJ/mol 37

Electrochemical Equivalent

1.26 g/amp-hr 51

Electron Work Function

4.71 eV 9

Other Chemical Properties

Anti Corrosion, Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

12.45 g/cm³ 27

Density When Liquid (at m.p.)

10.65 g/cm3 16

Vapor Pressure

Vapor Pressure at 1000 K

Not Available 0

Vapor Pressure at 2000 K

0.00 (Pa) 23

Tensile Strength

Not Available 0

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

173.00 GPa 4

Bulk Modulus

220.00 GPa 7

Young's Modulus

447.00 GPa 3

Poisson Ratio

0.30 14

Other Mechanical Properties

Ductile, Malleable 0

Periodic Table

Symbol

Ru 0

Group Number

8 10

Period Number

5 3

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

44 68

Atomic Weight

101.07 amu 62

Atomic Volume

8.30 cm3/mol 59

Electron Configuration

[Kr] 4d⁷ 5s¹ 0

Valence Electron Potential

64.00 (-eV) 22

Atom

Number of Protons

44 67

Number of Neutrons

57 50

Number of Electrons

44 67

Crystal Structure

Hexagonal Close Packed (HCP) 0

Crystal Lattice

rystal-Structure-of-Ruthenium.jpg#100 0

Radius of an Atom

Atomic Radius

134.00 pm 43

Covalent Radius

146.00 pm 38

Van der Waals Radius

200.00 pm 28

Lattice Constant

270.59 pm 67

Lattice Angles

π/2, π/2, 2 π/3 0

Lattice C/A Ratio

1.58 11

Adjacent Atomic Numbers

Next Element

35 0

Previous Element

58 0

Magnetic

Electrical Properties

Resistivity

71.00 nΩ·m 38

Electrical Conductivity

0.14 10⁶/cm Ω 16

Electron Affinity

101.30 kJ/mol 10

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

12.45 19

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.24 J/(kg K) 24

Thermal Conductivity

117.00 W/m·K 13

Critical Temperature

Not Available 0

Molar Heat Capacity

24.06 J/mol·K 54

Thermal Expansion

6.40 µm/(m·K) 51

Standard Molar Entropy

28.50 J/mol.K 54

Enthalpy

Enthalpy of Vaporization

567.80 kJ/mol 10

Enthalpy of Fusion

25.50 kJ/mol 7

Enthalpy of Atomization

603.00 kJ/mol 9

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