Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that? Give reason.
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Mendeleev arranged the elements in his periodic table ordered by atomic weight or mass. He arranged the elements in periods and groups in order of their increasing atomic weight. He placed the elements with similar properties in the same group. However, he did not stick to this arrangement for long.
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he selected the compound of elements with oxygen and hydrogen .He gave a table based on the atomic masses of the elements .
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