Periodic Table

Chromium

Atomic Number: 24

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Overview
PropertyValueUnits

Atomic Mass

51.9961

Density

7.14

g/cckg/m3lb/in3
Thermal Properties

Thermal Properties

PropertyValueUnits

Melting Point

1857°C

K°C°F°R

Boiling Point

2672°C

K°C°F°R

Critical Pressure

The critical pressure has not been determined for Chromium

Critical Temperature

The critical temperature has not been determined for Chromium

Heat of Fusion

20.5 kJ/mol

kJ/molcal/mol

Heat of Vaporization

339 kJ/mol

kJ/molcal/mol

Specific Heat

448 J/kg·K

J/kg·K

Thermal Conductivity

94 W/m·K

W/m·K
Electon Configuration

Electron Structure

[Ar] 3d5 4s1

Shell Arrangement

KLMNOPQ
28131000
LevelS OrbitalP OrbitalD OrbitalF Orbital
Level 1
Level 2
History

Year Discovered

1797

Isotopes
IsotopeCommon NameSymbolMassStatusAbundanceHalf-lifeDecay modeDecay EnergyNuclear SpinMagnetic Moment

24

Cr

50

ChromiumCr50Stable4.345-----

24

Cr

52

ChromiumCr52Stable83.789-----

24

Cr

53

ChromiumCr53Stable9.501-----

24

Cr

54

ChromiumCr54Stable2.365-----

Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.

Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.

 

Occurance
In the Universe0.0015%
In the Sun0.002%
In Meteorites0.3%
In the Earth's Crust0.014%
In Seawater0.00000006%
In the Human Body0.000003%
Models

Pictures, videos and 3D models of the element

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