Os

Osmium

Atomic Number 76 · Metal bead

The densest naturally occurring element. Has a pungent toxic oxide. Used in fountain pen tips and electrical contacts.

Atomic Mass

190.23 u

Category

Transition Metal

Phase (STP)

Solid

Density

22.59 g/cm³

Melting Point

3033 °C

Boiling Point

5012 °C

Electronegativity

2.2 (Pauling)

Atomic Radius

130 pm

Electron Configuration

[Xe] 4f14 5d6 6s2

Discovered

1803 — Smithson Tennant

Find Osmium Samples

Sample form: Metal bead

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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