Selenium
Selenium | |
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Atomic Number: 34 Atomic Weight: 78.96 Melting Point: 493.65 K (220.5°C or 428.9°F) Boiling Point: 985 K (685°C or 1265°F) Density: 4.809 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 4 Group Number: 16 Group Name: Chalcogen |