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
    The atomic number of an element is derived from [Kerala PMT 2004]

    A) Number of electrons

    B) Number of protons

    C) Number of neutrons

    D) Number of isotopes

    E) Number of nucleons

    Correct Answer: B

    Solution :

    The atomic no. of an element is derived from the no. of proton because during chemical reaction no. of electron undergoes for change


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