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  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

11th Class Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

  • question_answer 1)
      The period number in the long form of the periodic table is equal to : (a) magnetic quantum number of any element of the period. (b) atomic number of any element of the period. (c) maximum principal quantum number of any element of the period. (d) maximum azimuthal quantum number of any element of the period.

    Answer:

      (c) Each period starts with ns where n is principal quantum number. The value of n for various periods is 1, 2, 3, 4, 5, 6 and 7.


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