Chemical Bonding - Result Question 91
67. 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 molecules(s)/ion(s) where the hybridisation of the central atom does not have contribution from the $d$ -orbital(s) is [atomic number of $S=16, Cl=17, I=53$ and $Xe=54$ ]
(2015 adv.)
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Solution:
All the above mentioned molecules/ions have $sp$-hybridised central atom and no lone pair at central atom, hence linear also. Others are :
[Although $ICl_2^{-}$, $I_3^{-}$ and $XeF_2$ all also are linear but in them $d$-orbital contribute in hybridisation.]
BETA
