Fluorine, chlroine, bromine and iodine are placed in the same group (1 – InterviewSolution

1.	Fluorine, chlroine, bromine and iodine are placed in the same group (17) of the periodic table, because
Answer» They are non-metals They are ELECTRONEGATIVE Their atoms are generally univalent They have 7 ELECTRONS in the outermost shell of their atom Solution :Electronic CONFIGURATION of outermost shell of group-17 or HALOGENS are `ns^(2)np^(5)` .

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