JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is

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Correct option: A

C < N > O

Option C (

{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{OH}

) is correct because shorter alkyl chains in alcohols lead to stronger hydrogen bonding due to reduced hydrophobic character.

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\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}