Chemistry - CHEMICAL BONDING Question with Solution | TestHub
ChemistryCHEMICAL BONDINGBack bonding, Bridge bonding & odd electron moleculesMedium2 minQB
ChemistryMediumsingle choice
Among the following which is incorrect statement?
Options:
Answer:
D
Solution:
Statement 1 is correct: ClO₂ and NO are paramagnetic due to presence of unpaired electrons.
ClO₂ has one unpaired electron, and NO also has one unpaired electron in antibonding orbital.
Statement 2 is correct: solid PCl₅ exists as [PCl₄]⁺ (sp³) and [PCl₆]⁻ (sp³d²).
Hence phosphorus shows both sp³ and sp³d² hybridization in solid state.
Statement 3 is correct: NH₄⁺ is tetrahedral (109.5°) while NO₃⁻ is trigonal planar (120°).
Therefore, H–N–H bond angle is indeed smaller than O–N–O bond angle.
Statement 4 is incorrect: N(SiMe₃)₃ is trigonal planar (sp²), not pyramidal.
Hence, it does not resemble pyramidal NMe₃ due to strong pπ–dπ interaction and delocalization.
Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Back bonding, Bridge bonding & odd electron molecules
⏱ 2mℹ️ Source: QB
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