Question

write about mendeleev Scientist

Answer 1

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Mendeleev wrote the atomic weight and the properties of each element on a card. He took the cards everywhere he went. On February 17, 1869, right after breakfast, and with a train to catch later that morning, Mendeleev set to work organizing the elements with his cards

Answer 2

Answer:

Mendeleev was first scientist who arranged all elements correctly according to atomic number.

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