Chemistry - CHEMICAL BONDING Question with Solution | TestHub

ChemistryCHEMICAL BONDINGIntroduction, ValencyMedium2 minQB

ChemistryMediumnumerical

Passage / Comprehension

Lewis theory implies that every atom in a chemical bond always tries to achieve INERT gas configuration (either OCTET or DUPLET). However the actual molecular structure may or may not differ from LEWIS structures since some atoms can form bonds in excited state and can increase the covalency causing the change in number of σ and π bonds.

Number of molecules among the following that have all the bonds having equal strength and length

$N O_{2}^{+}$ ; $N O_{2}^{-}$ ; $PO F_{3}$ ; $S O_{2}$ ; $NO F_{3}$ ; $Cl O_{3}^{-}$ and $C O_{2}$

Answer:

5.00

Solution:

Only POF₃ and NOF₃ have different bond strengths and lengths. Rest all have all bonds equal.

$N O_{2}^{-}$ and $Cl O_{3}^{-}$ have resonance hence all bonds are equal

Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Introduction, Valency

⏱ 2mℹ️ Source: QB

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