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Group: Chalcogens

Chalcogens (6th main group) have graded physical properties (density, melting and boiling points increase) according to increasing atomic mass. They react with metals to form earthy and partly also basic metal chalcogenides.

Oxygencolorless (gas); pale blue (liquid and solid)

Sulfuryellow sintered microcrystals

Seleniumgrey metallic-looking, red, and vitreous black allotropes

Telluriumsilvery lustrous gray (crystalline); brown-black powder (amorphous)

Poloniumsilvery

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