Question

Which of the following is correct
order of atomic size ?
1.Cl< F< Br< I
2 F< Cl< Br< I
3.I< Br< Cl< F
4.Br< 1 < Cl< F​

Answer 1

Answer: correct order of atomic size is:

2) option

i.e. F<Cl<Br<I

as down the group size increases

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Explanation: