Why did Mendeleev take the formulae of oxides and hydrides formed by the elements as the basic property of elements for their classification in the periodic table?

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Solution

Actually, Hydrogen and Oxygen are highly reactive elements which react almost with all types of metals and nonmetals. So, the nature and similarities in oxides or hydrides could be the basis of classification on behalf of which the elements could be grouped together, because the elements with similar nature will definitely have similar types of hydrides and oxides.

Thus, Mendeleev used the oxides and hydrides for the basis of classification.

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Similar questions

Q. Which important property did Mendeleev use to classify the elements in his Periodic Table, and did he stick to that?

Why Mendeleev's choice of formulae of compounds as the basic for deciding the position of an element in his table was a good one? How would this lead to elements with similar chemical properties being placed in the same group?

Which among the following formulae of elements was used by Mendeleev for giving the classification?

Q. Consider the following statements:
(a) The discovery of inert gases later on did not disturb Mendeleev's arrangement.
(b) In his classification of element, Mendeleev was guided proportional to two factors.
(c) In the present periodic table, periodicity in the properties of elements is related to the periodicity in their electronic configurations.

Which of the above statement(s) is/are correct?

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