Which one of the following arrangements does not give the correct picture of the trends indicated against it? - Chemistry MCQ Chemistry | ExamTest.live | ExamTest.live

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Which one of the following arrangements does not give the correct picture of the trends indicated against it?

A $F_{2} > Cl_{2} > Br_{2} > I_{2} : Electronegativity$
B $F_{2} > Cl_{2} > Br_{2} > I_{2} : Oxidizing power$
C $F_{2} > Cl_{2} > Br_{2} > I_{2} : Electron gain enthalpy$
D $F_{2} > Cl_{2} > Br_{2} > I_{2} : Bond dissociation energy$

Solution & Step-by-step Explanation

The actual order of electron gain enthalpy is Cl > F > Br > I .The actual order of bond dissociation energy is Cl_{2} > Br_{2} > F_{2} > I_{2} (due to lone pair-lone pair repulsion in the small F_{2} molecule).Thus, option D (and C) does not represent the correct trend.

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Which one of the following arrangements does not give the correct picture of the trends indicated against it?

A

F_{2} > Cl_{2} > Br_{2} > I_{2} : Electronegativity

B

F_{2} > Cl_{2} > Br_{2} > I_{2} : Oxidizing power

C

F_{2} > Cl_{2} > Br_{2} > I_{2} : Electron gain enthalpy

D

F_{2} > Cl_{2} > Br_{2} > I_{2} : Bond dissociation energy

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