Question

give the decreasing radius order for F,I,Cl,Br​

Answer 1

Answer:

Br>cl>f. Reason is as we go down a particular group in periodic table size of an atom increases.

OR

Given elements are arranged in decreasing order of atomic radius as Br > Cl > F.

Explanation:

Atomic radius is defined as the distance between the nucleus and outermost shell of an atom. More is the number of electrons present in an atom more will be the number of shells present in it.

Hence, more will the distance between the nucleus and outermost shell. Therefore, more is the atomic number of an atom more will be its atomic radius.

Atomic number of Br is 35, F is 9 and Cl is 17. Hence, atomic radius of bromine is much more than chlorine. Atomic radius of fluorine will be the smallest.

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Answer 2

Answer:

decreasing order of radius is

I, Br, Cl, F