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

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    The electronic configuration of the element which is just above the element with atomic number 43 in the same periodic group is [MNR 1992; UPSEAT 1999, 2000, 02]

    A) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{5}}\,4{{s}^{2}}\]

    B) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{10}}\,4{{s}^{2}}\,4{{p}^{5}}\]

    C) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{6}}\,4{{s}^{1}}\]

    D) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}3{{p}^{6}}\,3{{d}^{10}}\,4{{s}^{1}}\,4{{p}^{6}}\]

    Correct Answer: A

    Solution :

      \[_{25}Mn-3{{d}^{5}}4{{s}^{2}}\].


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