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Which one of the following order is corr...

Which one of the following order is correct fo the bond energies of halogen molecules?

A

`I_2 gt Cl_2 gt Br_2`

B

`Br_2 gt Cl_2 gt I_2`

C

`I_2 gt Br_2 gt Cl_2`

D

`Cl_2 gt Br_2 gt I_2`

Text Solution

Verified by Experts

The correct Answer is:
D
Order of atomic radii: Cl lt Br lt I
Order of X-X bond length: `Cl_2 lt Br_2 lt I_2`
Shorter the bond, stronger the bond, more is the bond energy. Therefore, B.E. are in the order `Cl_2 gt Br_ 2 gt I_2`
However, the trend for `F_2`, is not what is expected from bond length data.
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DINESH PUBLICATION-THE HALOGEN FAMILY-REVISION
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  2. Which of the following gives correct arrangement of compounds involved...

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  3. Which one of the following order is correct fo the bond energies of ha...

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  4. Which one of the following elements shou different oxidation states?

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  5. At room temperature, HCl is a gas while HF is low boiling liquid. This...

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  6. Which of the following elements exhibits the most basic properties?

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  7. An element M has an atomic mass 19 and atomic number 9. Its ion is rep...

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  8. Oxidation state of chlorine in hypochlorous acid

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  9. In the presence of cobalt chloride (CoCl2), bleaching powder decompose...

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  10. Which one of the following halogen liberates oxygen, when passed throu...

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  11. Bond dissociation energies of HF, HCI, HBr follow the order

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  12. One mole of fluorine is reacted with two moles of hot and concentrated...

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  13. "Fluorosis" disease is caused due to the reaction of….. with excess ...

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  14. Fluorine oxidizes HSO4^(-) to ……

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  15. In which of the following, hydrogen bond is the strongest ?

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  16. Which of the following is used as an antiseptic ?

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  17. Which of the following has highest bond strength?

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  18. Which of the following halogens exhibit only one oxidation state in it...

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  19. Which has the highest bond energy?

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  20. Chlorine acts as a bleaching agent only in the presence of

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