Consider the following molecules? (SiH₃)₃N, O(SiH₃)₂, PF₃, P(SiH₃)₃, OCl₂, CH₃–NCO, BCl₃ (i) if the total number of molecules in which all the atoms are in same plane = P (ii) if the total number of m

Question

Consider the following molecules? (SiH₃)₃N, O(SiH₃)₂, PF₃, P(SiH₃)₃, OCl₂, CH₃–NCO, BCl₃ (i) if the total number of molecules in which all the atoms are in same plane $= P$ (ii) if the total number of molecules in which $p π - d π$ back bonding is significantly present $= Q$

(iii) if the total number of molecules in which all the atoms are not in same plane = R then find the value of $\frac{P + Q}{R} =$ ?

TestHub · Accepted Answer

Planar Molecules ( P = 2 ): OCl₂ and BCl₃ have all their atoms lying in a single plane. Non-Planar Molecules ( R = 5 ): (SiH₃)₃N, O(SiH₃)₂, PF₃, P(SiH₃)₃, and CH₃-NCO have atoms extending out of the plane due to tetrahedral -SiH₃/-CH₃ groups or pyramidal geometries. pπ-dπ Back Bonding ( Q = 3 ): Significantly present in (SiH₃)₃N, O(SiH₃)₂, and PF₃ (where a lone pair from a 2p orbital is donated into an empty 3d orbital). Substituting the values: R P + Q ​ = 5 2 + 3 ​ = 1

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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