Chapter 5: Periodic Classifications of Elements

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Periodic Classifications of Elements

Question:

What were the criteria used by Mendeleev in creating his Periodic Table?

Answer:

Dmitri Mendeleev gave a periodic law to arrange the elements. According to this law, the properties of elements are the periodic function of their atomic masses. When the elements are arranged in increasing atomic masses, there occurs a periodic recurrence of elements with similar physical and chemical properties. He also used the similarity in oxides and hydride formation to classify the elements.


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