There are various kind ofelementsthat are present inperiodic table. Some elements are harmful,  some are noble gases. Thesizedifference between chlorine and fluorine can be explained on the basis of number ofshells.What is periodic table?Periodic tableis a table in which we findelementswith properties like metals, non metals, metalloids and radioactive element arranges in increasingatomic number.As we go down along theperiodic tablethe number ofshellsincreases.Atomic numberof F= 9Electronic configurationof F=2, 7Atomic number of Cl= 17Electronic configuration of chlorine = 2,8,7So, there are total2 shellsin Fluorine while chlorine has3 shells. Thedistanceof shells increases with increase in number of shells. This makes the size ofchlorinemore bigger than fluorine.Therefore, thesizedifference betweenchlorineandfluorinecan be explained on the basis of number ofshells.Learn more aboutperiodic table, here:brainly.com/question/11155928#SPJ2...

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