Reactivity of Unknown Elements Reactivity Ranking Consider the reactivity data for 4 unknown elements nd their ions. Element I Element J Element K Element L I (ion) X Color change Color change X J (ion) Color change X X X K (ion) Color change X X X L (ion) Color change X Color change X What is the relative reactivity of the elements from least to most reactive? Element L< Element J < Element K< Element I Element I< Element K< Element J < Element L Element I and L are the same. Element J and K are the same. I and Lare less than J and K. Element I and L are the same. Element J and Kare the same. J and K are less than I and L.