The element that has chemical properties most similar to iodine (I), based on its location in the periodic table, is C. selenium (Se).
Iodine is in group 17 (the halogens), and selenium is in group 16 (the chalcogens), which are neighbors in the periodic table. Elements in the same group typically exhibit similar chemical properties, but being in adjacent groups, selenium shares some similar characteristics with iodine as well.
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