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Rekha 29: [[File:Selen 1.jpg\|thumb\|Black, gray, and red forms of selenium]]▼ '''Selenium''' ek [[chemical element]] hae jiske chemical symbol '''Se''', [[atomic number]] 34 aur [[mass number]] 78.96 hae. == Chhapa ke gallery == <gallery> ▲[[File:Selen 1.jpg~~\|thumb~~\|Black, gray, and red forms of selenium]] File:GaSeBulk.jpg\|Gallium selenide used in [[semiconductor]]s File:Tiemannite-199865.jpg\|Mercury selenide as a mineral Rekha 39: File:Sodium selenite.JPG\|Sodium selenite in a bottle </gallery> ~~==References==~~ ~~{{reflist}}~~ {{Periodic Table}}

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