atomic number 49

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Noun1.atomic number 49 - a rare soft silvery metallic elementatomic number 49 - a rare soft silvery metallic element; occurs in small quantities in sphalerite
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
blende, sphalerite, zinc blende - an ore that is the chief source of zinc; consists largely of zinc sulfide in crystalline form
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