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 VISUAL CHEMISTRY

SELENIUM
PROPERTIES
Relative atomic mass 78.96
Atomic mass (kg) 131x10-27
Density (g/cm3) 4.81
Physical State at STP Solid
Melting point (°C) 217
Boiling point (°C) 685
Crystal Structure of solid element Complex
Stable isotopes  74Se, 76Se, 77Se, 78Se, 80Se, 82Se

STP = standard temperature and pressure. Usually considered as room temperature and pressure.
 
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