Co

Cobalt

Atomic Number 27 · Metal piece

A hard, lustrous blue-grey metal. Used in lithium-ion batteries, superalloys, and the famous cobalt blue pigment.

Atomic Mass

58.933 u

Category

Transition Metal

Phase (STP)

Solid

Density

8.86 g/cm³

Melting Point

1495 °C

Boiling Point

2927 °C

Electronegativity

1.88 (Pauling)

Atomic Radius

135 pm

Electron Configuration

[Ar] 3d7 4s2

Discovered

1735 — Georg Brandt

Find Cobalt Samples

Sample form: Metal piece

Luciteria Science

Premium element samples in acrylic cubes

Engineered Labs

Element collections and periodic table displays

Various element samples and collections

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