Chromium (Cr) in the periodic table — PeriodicTable

Chromium (Cr) in the periodic tableChromium is element 24, a transition metal of the d block, in group 6, period 4. Its ground-state configuration is [Ar] 3d5 4s1, and it usually shows the oxidation states 0, 2, 3, 6.It was discovered in 1797, by Vauquelin.Name origin: the Greek chroma, 'color'. Blank rows are columns the sheet does not measure for this element.

Property

Value

Unit

Atomic weight

51.9961

Da

Electronegativity

1.66

First ionisation energy

652.9

kJ/mol

Covalent radius

127

pm

Melting point

2180

K

Boiling point

2944

K

Density

7.15

g/cm³

Abundance

102

mg/kg

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