<p>Among the Triatomic molecules/ions&nbsp;<span class="equation">\(BeCl_{2}, {N_{3}^{-}}, N_{2}O, NO_{2}^{+}, O_{3},SCl_{2}, ICl_{2}^{-}, I_{3}^-, XeF_2\)</span>&nbsp;the total number of molecules(s)/ions(s)&nbsp;where the hybridization of the central atom does not have contribution from the d-orbital (s) is</p>