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Which ion has the largest radius?(1) Br-(2) Cl-(3) F-

June 2018 NY Regents Chemistry Exam

9 Which ion has the largest radius?

(1) Br-

(2) Cl-

(3) F-

(4) I-

Solution: Atomic radius increases to the left and down on the Periodic Table. Since all the ions have the same charge, their radius trend would remain the same.

Answer: 4

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