Qh. Ans: option(4). How? h. In which case compounds of Cr show maximum radius i. K2CrO7 ii. CrO2Cl2 iii. Cr2(SO4)3 iv. CrCl2 Share with your friends Share 3 Vartika Jain answered this Dear Student, Radius of ion depends on its charge. Higher the charge, smaller will be the radii. The oxidation state of Cr in CrCl2 is +2 i.e. it has least positive value. In all other options, oxidation state of Cr is more positive and thus have smaller radii.So, CrCl2 will have maximum radius due to less positive charge. 1 View Full Answer