Atomic Number 34

Noun1.atomic number 34 - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
Se, selenium
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
fool's gold, iron pyrite, pyrite - a common mineral (iron disulfide) that has a pale yellow color
antioxidant - substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides

 

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