Question

Describe the merits of mendeleev's periodic table.in points
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Answer 1

Advantages:

~Systematic study of the elements.

~Correction of atomic masses.

~Prediction of new elements.

Answer 2

Answer: mendeleev was the first person, who arrange all the known element at that time according their attomic mass.

mendeleev's periodic law: the physical and chemical property of an element are the periodic function of their atomic weight.

at that time, 63 elements are known, he was the first scientist who classify elements in systematic manner i.e, in horizontal rows and vertical columns.

Explanation: the merits of mendeleev's periodic table

1. study of element: first time all the known element were classified in group according to their similar properties. so the study of element become easier.
2. perdiction of new elements: it gave encouragement to the discovery of new elements as some ga[s were left in it.like-eka aluminium-galium,eka boron-scandium etc.