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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)
    In the modem periodic table, the period indicates the value of : (a) atomic mass (b) atomic number (c) valence principal quantum number (d) azimuthal quantum number

    Answer:

    (c) Valence principal quantum number.


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