Question

information about Dmitri mendeleev​

Answer 1

Answer:

he introduced mendeleevs principles it contain 56elements in starting

Answer 2

Explanation:

Dmitri Mendeleev (1834-1907) was a professor and Russian scientist the professor in the Saint Peter berg University

he made a separate card for every known element showing its atomic mass arrange the cards in accordance with the atomic masses and properties of the elements which resulted in the invention of the periodic table of elements

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