Which one of the following orders is not in accordance with the property stated against it?

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Solution

Q.
Which one of the following orders is not in accordance with the property stated against it

1 $F > C l > B r > I$ : Electronegativity

2 $F_{2} > C l_{2} > B r_{2} > I_{2}$ : Bond dissociation energy

3 $F_{2} > C l_{2} > B r_{2} > I_{2}$ : Oxidizing power

4 $H I > H B r > H C l > H F$ : Acidic strength

Ans.
(2)

(b) Bond dissociation energy order

$\begin{matrix} {Cl}_{2} & > & {Br}_{2} & > & F_{2} & > & I_{2} \\ 242.6 & 192.8 & 158.8 & 151.1 \end{matrix} \begin{matrix} kJ/mol \end{matrix}$

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