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Arrange the following in the correct order of decreasing bond enthalpy

H_3C-F,H_3C-Cl,H_3C-Br,H_3C-I

Option: 1

H_3C-F>H_3C-Cl>H_3C-Br>H_3C-I


Option: 2

H_3C-Cl>H_3C-F>H_3C-Br>H_3C-I


Option: 3

H_3C-I>H_3C-CBr>H_3C-Cl>H_3C-F


Option: 4

H_3C-I>H_3C-CBr>H_3C-F>H_3C-Cl


Answers (1)

best_answer

As we learnt

 

Carbon halogen (C-X) bond length, Bond enthalpy and dilpole moments -

 

These factors depends of nature of C-X bonds.

- wherein

In haloalkanes bond strength of carbon-halogen bond decreases with an increase in bond length, as one moves from fluorine to iodine.So the order will be

 

H_3C-F>H_3C-Cl>H_3C-Br>H_3C-I

Therefore, option (1) is correct.

 

Posted by

Pankaj Sanodiya

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