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  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Extended or long form of periodic table

  • question_answer
    Which metal has 2 electrons in the outermost orbit

    A) Na

    B) Cu

    C) Au

    D) Be

    Correct Answer: D

    Solution :

      \[Be\,\,:\,\,\,1{{s}^{2}}\,2{{s}^{2}}\]


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