C-H bond enthalpy of halogenated hydrocarbons

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C-H bond enthalpy of halogenated hydrocarbons

Post by arrowhead1232 »

Hi, so based on data collected from databases, I found a trend in the C-H bond enthalpy of halogenated hydrocarbons such as those with the formula CH3X

In this case, the C-H bond enthalpy increases following this order: CH3I (greatest C-H bond enthalpy) > CH3F> CH3BR > CH3CL.

It can be seen that the CH bond enthalpy generally increases further down the halogens group, but fluorine is an exception to this trend, does anyone know why?
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