O

Oxygen

Atomic Number 8 · Gas ampule

The most abundant element in Earth's crust. Essential for respiration in most living organisms.

Atomic Mass
15.999 u
Category
Reactive Nonmetal
Phase (STP)
Gas
Density
0.001429 g/cm³
Melting Point
-218.79 °C
Boiling Point
-182.96 °C
Electronegativity
3.44 (Pauling)
Atomic Radius
60 pm
Electron Configuration
[He] 2s2 2p4
Discovered
1774 — Joseph Priestley

Find Oxygen Samples

Sample form: Gas ampule

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