Dmitri Ivanovich Mendeleev, a Russian chemist, was the most important contributor for the early development of a periodic table of elements where in the elements were arranged on the basis of their fundamental property the atomic mass and also on the similarity of chemical properties. There were 63 elements known at his time. To classify these elements:
Among chemical properties, Mendeleev concentrated on the compounds formed by the elements with _____________________. | |||
Right Option : D | |||
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Mendeleev examined the relationship between the ___________________________ of the elements and their physical and chemical properties. | |||
Right Option : B | |||
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Which of the following are correct : (a) Mendeleev took the formulae of the hydrides and oxides formed by an element as one of the basic properties of an element for its classification. (b) Mendeleev examined the relationship between the atomic masses of the elements and their physical and chemical properties. | |||
Right Option : C | |||
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