1a Alkali Metals
Name SymbolAtomic numberAtomic weightBoiling pointMelting PointDensity
Lithium Li 3 6.941 1342 C 181 C .53 g/cm3
Sodium Na 11 22.99 883 C 98 C .97 g/cm3
PotassiumK 19 39.10 759 C 64 C .86 g/cm3
Rubidium Rb 37 85.47 688 C 40 C 1.63 g/cm3
Cesium Cs 55 132.9 678 C 28 C 1.87 g/cm3
Francium Fr 87 223 677 C 27 C -

notes: The alkali metals are extremely reactive
[Elements by Group] [Elements by Atomic Number] [Elements by Name] [The Table] [Title Page]
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