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

  • question_answer
    A transition element \[X\] has a configuration \[\left[ Ar \right]3{{d}^{4}}\] in its + 3 oxidation state. Its atomic number is [CBSE PMT 1996]

    A) 25

    B) 26

    C) 22

    D) 19

    Correct Answer: A

    Solution :

    Number of electrons in excited state \[{{X}^{+3}}=18+4=22\] Number of electrons in ground state \[X=22+3=25\].


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