Question

discuss some major merits of mandeleevs periodic table ​

Answer 1

Answer:

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Answer 2

✰Merits of Mendeleev's Periodic Table :-

Mendeleev's periodic table was the first proper systematic classification of the elements. The merits of the table are :

✒Systematic study of elements : With the classification of elements into groups and periods, their study became quite systematic. For example, if the properties of one particular element in a group are known, those of the other elements could be predicted. Actually, elements placed in a group are expected to show similar characteristics.

✒Correction of atomic masses : The periodic table helped in correcting the atomic masses of some of the elements because the elements were arranged in order of their increasing atomic masses.

✒Prediction of new elements : At the time Mendeleev gave the periodic table only 63 elements were known. While arranging these elements in groups and periods, certain gaps were left. These gaps represented some undiscovered elements. But the properties of these unknown elements could be predicted from their positions in the respective groups. This helped, later on, to discover these elements.

✰More to know :-

•The table of elements made by Mendeleev is known as Mendeleev's Periodic Table.

•It is based on atomic mass.

•It was arranged into groups and periods.

✰Mendeleev's Periodic Law :-

Physical and chemical properties of elements are the periodic functions of their atomic mass.