Arrange in the increasing order of atomic radii of the following elements O, C, F, Cl, Br.
A
F < O < C < Cl < Br
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B
F < C < O < Cl < Br
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C
F < Cl < Br < O < C
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D
C < O < F < Cl < Br
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Solution
The correct option is A F < O < C < Cl < Br The increasing order of the atomic radius is F<O<C<Cl<Br. On moving down the group, the atomic radius increases. On moving from left to right in a period, the atomic radius decreases.