Lead Properties

Lead

Physical

Melting Point

327.50 °C 67

Boiling Point

1,740.00 °C 53

Hardness

Mohs Hardness

1.50 18

Brinell Hardness

38.00 MPa 49

Vickers Hardness

Not Available 0

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

1,190.00 m/s 52

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Pb 0

Isotopes

Known Isotopes

35 4

Electronegativity

Pauling Electronegativity

1.87 13

Sanderson Electronegativity

2.29 4

Allred Rochow Electronegativity

1.55 11

Mulliken-Jaffe Electronegativity

2.41 2

Allen Electronegativity

1.85 8

Electropositivity

Pauling Electropositivity

1.67 51

Ionization Energies

1st Energy Level

715.60 kJ/mol 31

2nd Energy Level

1,450.50 kJ/mol 43

3rd Energy Level

3,081.50 kJ/mol 23

Electrochemical Equivalent

3.87 g/amp-hr 9

Electron Work Function

4.25 eV 21

Other Chemical Properties

Anti Corrosion, Ionization, Radioactive Isotopes 0

Mechanical

Density

Density At Room Temperature

11.34 g/cm³ 33

Density When Liquid (at m.p.)

10.66 g/cm3 15

Vapor Pressure

Vapor Pressure at 1000 K

1.64 (Pa) 7

Vapor Pressure at 2000 K

Not Available 0

Tensile Strength

12.00 MPa 20

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

5.60 GPa 47

Bulk Modulus

46.00 GPa 24

Young's Modulus

16.00 GPa 48

Poisson Ratio

0.44 3

Other Mechanical Properties

Ductile, Malleable 0

Periodic Table

Symbol

Pb 0

Group Number

14 4

Period Number

6 2

Block

p block 0

Element Family

Post-Transition 0

Atomic

Atomic Number

82 34

Atomic Weight

207.20 amu 30

Atomic Volume

18.17 cm3/mol 27

Electron Configuration

[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p² 0

Valence Electron Potential

24.20 (-eV) 57

Atom

Number of Protons

82 34

Number of Neutrons

125 19

Number of Electrons

82 34

Crystal Structure

Face Centered Cubic (FCC) 0

Crystal Lattice

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

Radius of an Atom

Atomic Radius

175.00 pm 19

Covalent Radius

146.00 pm 38

Van der Waals Radius

202.00 pm 27

Lattice Constant

495.08 pm 16

Lattice Angles

π/2, π/2, π/2 0

Lattice C/A Ratio

Not Available 0

Adjacent Atomic Numbers

Next Element

23 0

Previous Element

46 0

Magnetic

Electrical Properties

Resistivity

208.00 nΩ·m 16

Electrical Conductivity

0.05 10⁶/cm Ω 36

Electron Affinity

35.10 kJ/mol 28

Electrical Property

Poor Conductor 0

Magnetic Characteristics

Specific Gravity

11.35 25

Magnetic Ordering

Diamagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.13 J/(kg K) 39

Thermal Conductivity

35.30 W/m·K 38

Critical Temperature

Not Available 0

Molar Heat Capacity

26.65 J/mol·K 26

Thermal Expansion

28.90 µm/(m·K) 13

Standard Molar Entropy

64.80 J/mol.K 17

Enthalpy

Enthalpy of Vaporization

179.40 kJ/mol 43

Enthalpy of Fusion

4.77 kJ/mol 53

Enthalpy of Atomization

194.60 kJ/mol 45

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