AP EAPCET 24-Aug-2021 Shift 1 Paper

For a particular element, the order of size of anion, cation and neutral species is anion > element > cation.
Cation has smallest size due to greater (Zeff) effective nuclear charge.
Size is inversely proportional to Zeff, which is directly proportional to positive charge.
Thus, I−>I>I+.