Which two criteria did Mendeleev use to classify the elements in his periodic table?
(i) Which two criteria did Mendeleev use to classify the elements in his periodic table?
(ii) State Mendeleev’s periodic law.
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(i) The two criteria used by Mendeleev to classify the elements in his periodic table are
(a) Increasing order of atomic masses.
(b) Similarity in the chemical properties of elements.
(ii) Mendeleev’s periodic law: The properties of elements are the periodic function of their atomic masses.
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