Symbol: O
Atomic Number: 8
Mass: 15.9994
Melting Point: -218.4
Boiling Point: -183
Number of Protons/Electrons: 8
Number of Neutrons: 8
Classification: Non-metal
Crystal Structure: Cubic
Density: 1.429
Color: colorless
Atomic Structure
Number of Energy Levels: 2
First Energy Level: 2
Second Energy Level: 6
Isotopes
Isotope
Half Life
O-15
122.2 seconds
O-16
Stable
O-17
Stable
O-18
Stable
Facts
Date of Discovery: 1774
Discoverer: Joseph Priestly
Name Origin: From the Greek words oxus (acid) and gennan (generate)
Uses: supports life
Obtained From: from liquid air
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