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Question

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.
Periodic table - Wikipedia

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