Actinium
Actinium | |
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Atomic Number: 89 Atomic Weight: 227 Melting Point: 1324 K (1051°C or 1924°F) Boiling Point: 3471 K (3198°C or 5788°F) Density: 10.07 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 7 Group Number: none Group Name: Actinide |