Among the triatomic molecules/ions,Be Cl2,N3-, N2O,NO+2,O3,SCl2, ICl2,-l3- and XeF2, and XeF2, the total number of linear molecules(s)/ion(s) where the hybridization 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]