MCQ
Identify the correct decreasing order af bond dissociation enthalpy.
- A$F - F > Cl - CI > Br - Br >1-1$
- B
- C$Cl - Cl > F - F > Br - Br >1-1$
- ✓
✓
Answer
Correct option: D.
(d): The decreasing order for the bond dissociation enthalpy of halogen molecules is
$
\begin{aligned}
Cl _2(57 kcal / mol ) & > Br _2(45.5 kcal / mol )> \\
F _2(38 kcal / mol ) & > I _2(35.6 kcal / mol )
\end{aligned}
$
$
\begin{aligned}
Cl _2(57 kcal / mol ) & > Br _2(45.5 kcal / mol )> \\
F _2(38 kcal / mol ) & > I _2(35.6 kcal / mol )
\end{aligned}
$
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