Element Chromium (Cr)

Atomic number 24 · transition metal · Atomic mass 51.996 u

Atomic Mass
51.9960 u
Element Properties
Atomic Number 24
Atomic Mass 51.9960 u
Category transition metal / 过渡金属
Group 6
Period 4
Block D
Electron Configuration [Ar] 3d⁵ 4s¹
Electronegativity (Pauling) 1.66
Phase at STP Solid
Density 7.15 g/cm³
Year Discovered 1797

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