JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    Which of the following general configuration of outermost shell represents chromium element [Cr?s atomic number = 24] [CBSE PMT 1991; MP PMT 1992, 2001; RPET/PMT 1999]

    A) \[{{d}^{5}}{{s}^{1}}\]

    B) \[{{d}^{6}}{{s}^{0}}\]

    C) \[{{d}^{4}}{{s}^{2}}\]

    D) \[{{d}^{3}}{{s}^{2}}\]

    Correct Answer: A

    Solution :

        This configuration is more stable because of symmetrical distribution of e- and exchange energy.


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