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Among the triatomic molecules/ions BeCl(...

Among the triatomic molecules/ions `BeCl_(2),N_(3)^(-),N_(2)O, NO_(2)^(+), O_(3), SCl_(2), lCl_(2)^(-),l_(3)^(-)` and `XeF_(2)`, the total number of linear molecules (s)/ion(s) where the hybridisation of the central atom does not have contribution from the `d`- orbitals (s) is [atomic number of `S=16, Cl=17, I=53` and `Xe=54`]

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The correct Answer is:
4
`underset("Linear sp hybridisation")underbrace(CI-Be-CI overset(-1)(N)=overset(+1)(N)=overset(-1)N N-=NrarrO " O"=overset(o+)(N)=O)`.
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