Question

22. (w What is periodicily Explain cause of periodicity​

Answer 1

1 : at regular intervals of time. 2 : from time to time : frequently.

The cause of periodicity is the recurrence of similar electronic configuration i.e. same number of electrons in the outermost orbit.In a particular group, electrons in the outermost orbit remain the same i.e. electronic configuration is similar.

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Answer 2

Answer:

Ji kuch Samj Nahi Aaraha hai