2a Alkali Earth Metals
Name SymbolAtomic numberAtomic weightBoiling pointMelting PointDensity
BerylliumBe 4 9.012 2472 C 1289 C 1.85 g/cm3
MagnesiumMg 12 24.31 1090 C 650 C 1.74 g/cm3
Calcium Ca 20 40.08 1494 C 842 C 1.55 g/cm3
StrontiumSr 38 87.62 1382 C 769 C 2.54 g/cm3
Barium Ba 56 137.3 1805 C 729 C 3.5 g/cm3
Radium Ra 88 226.0 - C 700 C 5.0 g/cm3

notes: The alkali earth metals are very reactive.
Beryllium compounds can be extremely irritating and poisonous.
Radium was discovered by Madame Curie, and is extremely radioactve.
[Elements by Group] [Elements by Atomic Number] [Elements by Name] [The Table] [Title Page]
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