write any 2 important contribution made by mendeleev
Answers
Answer:
Dmitri Mendeleev was a Russian chemist who lived from 1834 to 1907. He is considered to be the most important contributor to the development of the periodic table. His version of the periodic table organized elements into rows according to their atomic mass and into columns based on chemical and physical properties.
Answer:
Dmitri Ivanovich Mendeleev (1834 – 1907) was a Russian chemist most famous for his contributions to the Periodic Table. He was the first to publish a periodic table similar to the one we use today and is credited for discovering the Periodic law. More importantly, he put the elements in their right places in his periodic table correctly pointing out that their atomic weights had been measured incorrectly; and brilliantly predicted the existence and properties of yet undiscovered elements.
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