Question

State Mendelev periodic law?write one of each of the merit and dimerit?

Answer 1

mendeleef periodic law :

states that the physical and chemical properties of elements are the periodic functions of their atomic weights.

medeleef arranged the elements in 8 groups and 7 periods

but atomic number is the more fundamentaql characteristic of an element than its atomic weight. this is one of the demerit

salient features:

1. groups and sub-groups
2. periods
3. perdict the properties of missing elements
4. correction of atomic weights
5. anamalus series

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.hope it will helped u

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Answer 2

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