how did mendeleev arrange chemical elements ?

Mandleev arranged the elements on the basis of increasing order of the atomic masses of the elements.

He divided the 63 elements which were known or discovered at that time.

There were 8 groups and 6 periods in his Periodic Table.

Most importantly he made cards of every element , and wrote the reactions of that element with hydrogen and oxygen. Thus he found the similarities in the chemical formulae also, and he found taht these were related to the mass of elements.

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I am M.Sc (chemistry ) from punjabi university. I am a science teacher with expertise in chemistry, with 8 years of experiance in teaching. i am getting a handsome salary , now i wish to help out the people who need me UNCONDITIONALLY. and I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

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