Chromium Properties

Chromium

Physical

Melting Point

1,857.00 °C 14

Boiling Point

2,672.00 °C 39

Hardness

Mohs Hardness

8.50 1

Brinell Hardness

687.00 MPa 16

Vickers Hardness

1,060.00 MPa 10

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

5,940.00 m/s 5

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Cr 0

Isotopes

Known Isotopes

21 18

Electronegativity

Pauling Electronegativity

1.66 18

Sanderson Electronegativity

1.66 14

Allred Rochow Electronegativity

1.56 10

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.65 19

Electropositivity

Pauling Electropositivity

2.34 36

Ionization Energies

1st Energy Level

26,130.00 kJ/mol 1

2nd Energy Level

28,750.00 kJ/mol 1

3rd Energy Level

34,230.00 kJ/mol 1

Electrochemical Equivalent

0.32 g/amp-hr 73

Electron Work Function

4.50 eV 14

Other Chemical Properties

Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

7.19 g/cm³ 58

Density When Liquid (at m.p.)

6.30 g/cm3 40

Vapor Pressure

Vapor Pressure at 1000 K

0.00 (Pa) 24

Vapor Pressure at 2000 K

774.00 (Pa) 1

Tensile Strength

689.00 MPa 7

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

115.00 GPa 9

Bulk Modulus

160.00 GPa 11

Young's Modulus

279.00 GPa 8

Poisson Ratio

0.21 32

Other Mechanical Properties

NA 0

Periodic Table

Symbol

Cr 0

Group Number

6 12

Period Number

4 4

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

24 82

Atomic Weight

52.00 amu 76

Atomic Volume

7.23 cm3/mol 60

Electron Configuration

[Ar] 3d⁵ 4s¹ 0

Valence Electron Potential

170.00 (-eV) 4

Atom

Number of Protons

24 81

Number of Neutrons

28 61

Number of Electrons

24 81

Crystal Structure

Body Centered Cubic (BCC) 0

Crystal Lattice

BCC-Crystal-Structure-.jpg#100 0

Radius of an Atom

Atomic Radius

128.00 pm 46

Covalent Radius

139.00 pm 45

Van der Waals Radius

200.00 pm 28

Lattice Constant

291.00 pm 62

Lattice Angles

π/2, π/2, π/2 0

Lattice C/A Ratio

Not Available 0

Adjacent Atomic Numbers

Next Element

31 0

Previous Element

39 0

Magnetic

Electrical Properties

Resistivity

125.00 nΩ·m 27

Electrical Conductivity

0.08 10⁶/cm Ω 25

Electron Affinity

64.30 kJ/mol 15

Electrical Property

NA 0

Magnetic Characteristics

Specific Gravity

7.19 46

Magnetic Ordering

Antiferromagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.45 J/(kg K) 12

Thermal Conductivity

93.90 W/m·K 17

Critical Temperature

Not Available 0

Molar Heat Capacity

23.35 J/mol·K 55

Thermal Expansion

4.90 µm/(m·K) 57

Standard Molar Entropy

23.80 J/mol.K 57

Enthalpy

Enthalpy of Vaporization

348.80 kJ/mol 24

Enthalpy of Fusion

15.31 kJ/mol 20

Enthalpy of Atomization

397.50 kJ/mol 21

All >>

<< Thermal

Transition Metals

Compare Transition Metals

Transition Metals

Cadmium
Periodi... | Physical | Chemical | Mechanical

Vanadium
Periodi... | Physical | Chemical | Mechanical

Osmium
Periodi... | Physical | Chemical | Mechanical

» More Transition Metals

Compare Transition Metals

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

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

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

» More Compare Transition Metals

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Chromium Properties

Transition Metals

Compare Transition Metals

Transition Metals

Compare Transition Metals