Question

Periodic table was given by

A. Faraday
B. Lavoisier
C. Arrhenius
D. Mendeleef

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Answer 1

Answer:

In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them. In 1886 French physicist Antoine Bequerel first discovered radioactivity.

Answer 2

Answer:

Dimitri Mendeleev

✧ Russian chemist Dmitrii Mendeleev (shown around 1880) was the first to publish a periodic table, which put the known elements into a logical order and left room for elements not yet discovered.

Explanation:

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