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What is the basic difference in …

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What is the basic difference in approach between the mendeleev's periodic law and modern periodic law?

    • Posted by Anzal Khan 6 years, 10 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    Mendeleev’s Periodic law is based upon atomic weights of elements, whereas Modem Periodic Law is based upon atomic number of elements. Mendeleev stated : "The properties of the elements are a periodic function of their atomic weights."
    Modern Periodic Law states : “The physical and chemical properties of the elements are periodic functions of their atomic numbers.”

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