Question

Mendeleev's contribution to the concept of periodic table laid the foundation of Modern Periodic table. Give reason?!

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Answer 1

Answer:

Mendeleev laid the foundation for the Modern Periodic Table by classifying 63 elements in increasing order of their atomic masses. He arranged them in 8 groups by leaving gaps for undiscovered elements and predicting their properties. He made separate groups for metals and non-metals.

Explanation:

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Answer 2

Answer:

this is your answer

Explanation:

Mendeleev laid the foundation for the Modern Periodic Table by classifying 63 elements in increasing order of their atomic masses. He arranged them in 8 groups by leaving gaps for undiscovered elements and predicting their properties. He made separate groups for metals and non-metals.