JEE Advanced · 2015 · 24 May 2015 · Paper 1 · Chemical Bonding and Molecular Structure

Among the triatomic molecules/ions,

BeCl_{2}, N_{3}^{-}, N_{2} O, NO_{2}^{+}, O_{3}, SCl_{2}, ICl_{2}^{-}, I_{3}^{-}

and

XeF_{2}

, the total number of linear molecule(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

]

Answer: 4

Solution

Linear species without d-orbital contribution (sp hybridization only):

Other species either use d-orbitals (

ICl_{2}^{-}, I_{3}^{-}, XeF_{2}

) or are non-linear (

O_{3}, SCl_{2}

).

Total = 4.

JEE Advanced · 2015 · 24 May 2015 · Paper 1 · Integer answer