Question
Among the triatomic melecules/ions, BeCl2, N−3, N2O, NO+2, O3, SCl2, ICl−2, I−3 and XeF2, the total number of linear molecules(s)/ion(s) where the hybrization of the central atom does not have contribution from the d-orbital(s) is
[Atomic number : S=16,Cl=17,I=53 and Xe=54]