JEE Main & Advanced Chemistry Structure of Atom Question Bank Quantum number, Electronic configuration and Shape of orbitals

  • question_answer A transition metal \[X\] has a configuration \[[Ar]3{{d}^{4}}\] in its \[+3\] oxidation state. Its atomic number is   [EAMCET 1990]

    A)                 25          

    B)                 26

    C)                 22          

    D)                 19

    Correct Answer: A

    Solution :

                    Electrons in the atom \[=18+4+3=25\] i.e.   \[Z=25\].

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