Lutetium Properties

Lutetium

Physical

Melting Point

1,652.00 °C 19

Boiling Point

3,402.00 °C 19

Hardness

Mohs Hardness

Not Available 0

Brinell Hardness

893.00 MPa 10

Vickers Hardness

1,160.00 MPa 8

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

Not Available 0

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Lu 0

Isotopes

Known Isotopes

35 4

Electronegativity

Pauling Electronegativity

1.27 34

Sanderson Electronegativity

Not Available 0

Allred Rochow Electronegativity

1.14 28

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

Not Available 0

Electropositivity

Pauling Electropositivity

2.73 20

Ionization Energies

1st Energy Level

523.50 kJ/mol 79

2nd Energy Level

1,340.00 kJ/mol 51

3rd Energy Level

2,022.30 kJ/mol 73

Electrochemical Equivalent

2.18 g/amp-hr 23

Electron Work Function

3.30 eV 33

Other Chemical Properties

Anti Corrosion, Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

9.84 g/cm³ 38

Density When Liquid (at m.p.)

9.30 g/cm3 22

Vapor Pressure

Vapor Pressure at 1000 K

0.00 (Pa) 33

Vapor Pressure at 2000 K

3.18 (Pa) 11

Tensile Strength

Not Available 0

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

27.20 GPa 26

Bulk Modulus

47.60 GPa 23

Young's Modulus

68.60 GPa 30

Poisson Ratio

0.26 21

Other Mechanical Properties

NA 0

Periodic Table

Symbol

Lu 0

Group Number

Not Available 0

Period Number

6 2

Block

f block 0

Element Family

Lanthanide 0

Atomic

Atomic Number

71 45

Atomic Weight

174.97 amu 40

Atomic Volume

17.78 cm3/mol 30

Electron Configuration

[Xe] 6s² 4f¹⁴ 5d¹ 0

Valence Electron Potential

50.90 (-eV) 26

Atom

Number of Protons

71 44

Number of Neutrons

104 30

Number of Electrons

71 44

Crystal Structure

Hexagonal Close Packed (HCP) 0

Crystal Lattice

BCC-Crystal-Structure-.jpg#100 0

Radius of an Atom

Atomic Radius

174.00 pm 20

Covalent Radius

187.00 pm 20

Van der Waals Radius

221.00 pm 22

Lattice Constant

350.31 pm 43

Lattice Angles

π/2, π/2, 2 π/3 0

Lattice C/A Ratio

1.59 10

Adjacent Atomic Numbers

Next Element

63 0

Previous Element

76 0

Magnetic

Electrical Properties

Resistivity

582.00 nΩ·m 9

Electrical Conductivity

0.02 10⁶/cm Ω 45

Electron Affinity

50.00 kJ/mol 21

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

9.84 29

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.15 J/(kg K) 36

Thermal Conductivity

16.40 W/m·K 51

Critical Temperature

Not Available 0

Molar Heat Capacity

26.86 J/mol·K 24

Thermal Expansion

9.90 µm/(m·K) 40

Standard Molar Entropy

51.00 J/mol.K 30

Enthalpy

Enthalpy of Vaporization

355.90 kJ/mol 22

Enthalpy of Fusion

18.70 kJ/mol 13

Enthalpy of Atomization

398.00 kJ/mol 20

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