State modern periodic law. What is the number of groups and periods in the modern periodic?
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Solution
Modern periodic law:-
The modern periodic law states that the physical and chemical properties of elements are periodic functions of their increasing atomic number.
The element in this modern periodic table is arranged in the increasing order of the atomic numbers thus the element occurs at regular intervals with similar chemical and physical properties.
There are a total of 18 groups and 7 periods in the modern periodic table.
