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NEET levelSingle correct optionDifficulty 1 of 3ph005

The correct order of covalent (atomic) radii of the halogens is

A $Cl < F < Br < I$
B $F < Cl < Br < I$
C $F > Cl > Br > I$
D $F < Br < Cl < I$

Answer: B

Each successive halogen has one more electron shell, so the radius increases down the group: F < Cl < Br < I.

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