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Bond Order and Enthalpy

Which one of ...

Question

Which one of the following halogens has the highest bond energy?

F_{2}

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C l_{2}

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B r_{2}

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I_{2}

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Solution

The correct option is B $C l_{2}$
The bond energy will decrease down the group because, as we move down the group, the bond length increases. However, chlorine has greater energy than fluorine because of its extremely small size. The $F - F$ bond length is so short that the lone pairs of electrons on the fluorine atoms repels the other and weakens the $F - F$ bond.

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Similar questions

C l_{2} > B r_{2} > F_{2} > I_{2}

F_{2}, C l_{2}, B r_{2}, I_{2}

F_{2}, C l_{2}, B r_{2}, I_{2},

F_{2} > C l_{2} > B r_{2} > I_{2} :

F_{2} > C l_{2} > B r_{2} > I_{2} :

F_{2} > C l_{2} > B r_{2} > I_{2} :

F_{2} > C l_{2} > B r_{2} > I_{2} :

F_{2} > C l_{2} > B r_{2} > I_{2} :

F_{2} > C l_{2} > B r_{2} > I_{2} :

H O C l > H C l O_{2} > H C l O_{3} > H C l O_{4} :

H O C l > H C l O_{2} > H C l O_{3} > H C l O_{4} :

(x^{2} + y^{2})

x

y

{C l}_{2}, {B r}_{2}

I_{2}

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