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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 pair of atomic numbers represents \[s\]-block elements [EAMCET 1990; RPMT 1997; MP PET 2003]

    A) 7, 15

    B) 6, 12

    C) 9, 17

    D) 3, 12

    Correct Answer: D

    Solution :

      Last electron goes to s-subshell.


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