6a Oxygen
Name SymbolAtomic numberAtomic weightBoiling pointMelting PointDensity
Oxygen O 8 16.00 -183 C -220 C tp 1.43 g/cm3(gas)
Sulfur S 16 32.06 445 C 115 C 2.07 g/cm3
Selenium Se 34 78.96 685 C 221 C 4.80 g/cm3
TelluriumTe 52 127.6 988 C 450 C 6.24 g/cm3
Polonium Po 84 (209) 962 C 254 C 9.3 g/cm3

notes: The element Oxygen composes approximatly one-fifth of earth's atmosphere, and is essential to life.
Sulfur is found in many proteins, and its compound with Hydrogen(HS-Hydrogen Sulfide) is the cause of the smell of rotten eggs.
[Elements by Group] [Elements by Atomic Number] [Elements by Name] [The Table] [Title Page]
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