Chemistry - CHEMICAL BONDING Question with Solution | TestHub
ChemistryCHEMICAL BONDINGBack bonding, Bridge bonding & odd electron moleculesMedium2 minQB
ChemistryMediummultiple choice
Which of the following reaction(s) proceeds for completion of octet?
Options:(select one or more)
Answer:
A, B, C
Solution:
The reactions (A), (B), and (C) proceed for the completion of the octet because the central atoms in the reactants are either electron-deficient or contain unpaired electrons.
(A) B₂H₆ contains electron-deficient Boron; reacting with NMe₃ (a Lewis base) allows Boron to accept a lone pair and complete its octet.
(B) NO₂ is an odd-electron molecule (7 valence electrons on N); dimerization to N₂O₄ pairs these electrons to achieve a stable octet.
(C) AlCl₃ has only 6 electrons around Aluminum; it forms Al₂Cl₆ via coordinate halogen bridges to complete the octet for Al.
(D) ICl₃ is already hypervalent (more than 8 electrons), so its dimerization is not driven by octet completion.
Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Back bonding, Bridge bonding & odd electron molecules
⏱ 2mℹ️ Source: QB
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