24 Cr Chromium 51.996 u

Chromium

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Period
4
Group
6
Block
d-block
Phase (STP)
Solid

Chromium is a hard, lustrous transition metal prized for its mirror finish. It is essential in stainless steel production and chrome plating.

Appearance: Silvery metallic

Physical Properties

Atomic Mass 51.996 u
Density 7.15 g/cm³
Melting Point 1906.8 °C
Boiling Point 2670.8 °C
Phase at STP Solid
Atomic Radius 166.0 pm

Electronic Properties

Electronegativity 1.66
Ionization Energy 652.9 eV
Electron Affinity 64.3 eV
Valence Electrons 6

Electron Configuration

Configuration [Ar] 3d⁵ 4s¹

Electron Shell Configuration

Chromium electron shell configuration Cr 2e⁻ 8e⁻ 13e⁻ 1e⁻

Position in Periodic Table

Chromium position in the periodic table Cr

Discovery

Discovered by: Louis Nicolas Vauquelin
Year: 1797

Compounds Containing Chromium

More Transition Metal

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Frequently Asked Questions

What is Chromium?
Chromium (Cr) is a chemical element with atomic number 24. It is a solid at standard temperature and pressure, classified as a transition metal.
What are the key properties of Chromium?
Chromium has an atomic mass of 51.996 u, density of 7.15 g/cm³, melting point of 1906.8°C, boiling point of 2670.8°C.
What is the electron configuration of Chromium?
The electron configuration of Chromium is [Ar] 3d5 4s1. It is in the d-block of the periodic table.
Who discovered Chromium?
Chromium was discovered by Louis Nicolas Vauquelin in 1797.
What is the electronegativity of Chromium?
Chromium has an electronegativity of 1.66 on the Pauling scale.