নতুন আবিশ্কৃত মৌলিক পদার্থ দুটির নাম কি?

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    Sep 29, 2012 01:22 AM 1 Answers
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    AnswersBD Administrator Oct 03, 2012 11:34 AM
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    1.  112 element –Copernicium

    2.  113 element – Ununtrium
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