Platinum Properties

Platinum

Physical

Melting Point

1,772.00 °C 16

Boiling Point

3,827.00 °C 15

Hardness

Mohs Hardness

3.50 11

Brinell Hardness

300.00 MPa 34

Vickers Hardness

400.00 MPa 25

Optical Properties

Refractive Index

Not Available 0

Reflectivity

73.00 % 8

Speed of Sound

2,800.00 m/s 29

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Pt 0

Isotopes

Known Isotopes

35 4

Electronegativity

Pauling Electronegativity

2.28 3

Sanderson Electronegativity

Not Available 0

Allred Rochow Electronegativity

1.44 17

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.72 16

Electropositivity

Pauling Electropositivity

1.72 50

Ionization Energies

1st Energy Level

870.00 kJ/mol 10

2nd Energy Level

1,791.00 kJ/mol 21

3rd Energy Level

Not Available 0

Electrochemical Equivalent

1.82 g/amp-hr 35

Electron Work Function

5.65 eV 1

Other Chemical Properties

Chemical Stability, Anti Corrosion, Ionization 0

Mechanical

Density

Density At Room Temperature

21.45 g/cm³ 11

Density When Liquid (at m.p.)

19.77 g/cm3 2

Vapor Pressure

Vapor Pressure at 1000 K

Not Available 0

Vapor Pressure at 2000 K

0.07 (Pa) 18

Tensile Strength

125.00 MPa 14

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

61.00 GPa 14

Bulk Modulus

230.00 GPa 6

Young's Modulus

168.00 GPa 14

Poisson Ratio

0.38 6

Other Mechanical Properties

Ductile, Malleable 0

Periodic Table

Symbol

Pt 0

Group Number

10 8

Period Number

6 2

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

78 38

Atomic Weight

47.87 amu 78

Atomic Volume

9.09 cm3/mol 53

Electron Configuration

[Xe] 4f¹⁴ 5d⁹ 6s¹ 0

Valence Electron Potential

392.42 (-eV) 1

Atom

Number of Protons

78 38

Number of Neutrons

117 24

Number of Electrons

78 38

Crystal Structure

Face Centered Cubic (FCC) 0

Crystal Lattice

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

Radius of an Atom

Atomic Radius

139.00 pm 39

Covalent Radius

136.00 pm 46

Van der Waals Radius

175.00 pm 36

Lattice Constant

392.42 pm 24

Lattice Angles

π/2, π/2, π/2 0

Lattice C/A Ratio

Not Available 0

Adjacent Atomic Numbers

Next Element

3 0

Previous Element

33 0

Magnetic

Electrical Properties

Resistivity

105.00 nΩ·m 30

Electrical Conductivity

0.10 10⁶/cm Ω 21

Electron Affinity

205.30 kJ/mol 2

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

21.45 4

Magnetic Ordering

Paramagnetic 0

Permeability

0.00 H/m 3

Susceptibility

Not Available 0

Thermal

Specific Heat

0.13 J/(kg K) 39

Thermal Conductivity

71.60 W/m·K 24

Critical Temperature

Not Available 0

Molar Heat Capacity

25.86 J/mol·K 35

Thermal Expansion

8.80 µm/(m·K) 44

Standard Molar Entropy

41.60 J/mol.K 36

Enthalpy

Enthalpy of Vaporization

510.50 kJ/mol 11

Enthalpy of Fusion

19.70 kJ/mol 12

Enthalpy of Atomization

565.00 kJ/mol 11

All >>

<< Thermal

Transition Metals

Compare Transition Metals

Transition Metals

Iridium
Periodi... | Physical | Chemical | Mechanical

Molybdenum
Periodi... | Physical | Chemical | Mechanical

Rhodium
Periodi... | Physical | Chemical | Mechanical

» More Transition Metals

Compare Transition Metals

Cobalt vs Zinc
Periodi... | Physical | Chemical | Mechanical

Nickel vs Zinc
Periodi... | Physical | Chemical | Mechanical

Chromium vs Zinc
Periodi... | Physical | Chemical | Mechanical

» More Compare Transition Metals

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Platinum Properties

Transition Metals

Compare Transition Metals

Transition Metals

Compare Transition Metals