Select the correct statements

( 1) F2 does not form F3⊝ ion due to unavailability of vacant d-orbital in second shell of F-atom. Whereas I2 form I3⊝ ion since it    has vacant d-orbital. So It is incorect statement(2) ClF3 exists, because F is more EN .as compared to Cl and has smaller size. Thus one large sized Cl atom can accommodate three smaller F atoms around it.FCl3 does not exist, due to low EN of Cl as compared to F, Cl cannot excite e 's in F atom, and also F, does not have vacant d-orbital. Moreover, one small sized F-atom cannot accommodate three large sized Cl atoms around it.(3) Alkaline KMnO4 oxidizes aqueous I2, to IO3⊝ion, other reagents which oxidizes I, to I- ion are:Acidic K2Cr2O7,H2O2, Cl2, O3, FeCl3, HNO3, CuSO4. No reaction occurs between I2 and S2O32-ion. so it is incorrect statement(4) F does not show O.S. of +3, +5 and +7 due to absence of d-orbital while other halogens do show. It shows only +1 O.S. and forms only one oxy-acid HOF.