Chemistry - CHEMICAL BONDING Question with Solution | TestHub
ChemistryCHEMICAL BONDINGBack bonding, Bridge bonding & odd electron moleculesMedium2 minQB
ChemistryMediummultiple choice
Molecule in which bond angle increases due to back bonding.
Options:(select one or more)
Answer:
B, C
Solution:
Back bonding occurs when a ligand has a lone pair that can donate into vacant orbitals of the central atom, reducing lone pair repulsion.
In BF₃, back bonding occurs (F → B π donation), but it does not increase bond angle significantly.
In O(SiH₃)₂ and N(SiH₃)₃, strong O/N → Si back bonding reduces lone pair repulsion, increasing bond angle.
Hence, both (B) and (C) show increase in bond angle due to back bonding.
Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Back bonding, Bridge bonding & odd electron molecules
⏱ 2mℹ️ Source: QB
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