a] Name the element with atomic number 17. b]To which period does it b – InterviewSolution

InterviewSolution

1.	a] Name the element with atomic number 17. b]To which period does it belong? c]To which group does it belong? d]Write its electronic configuration.
Answer» Solution :a] Chlorine (CI). B] Since it has 3 electron shells, it belongs to the 3rd PERIOD. c] Since it has 7 valence ELECTRONS, it belongs to the 17th group. d] Its electronic configuration is 2, 8, 7.

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