CAPE Chemistry Unit 2 · 2013 · Paper 1 · Question Q42
When chlorofluorocarbons in the upper atmosphere are impacted by ultraviolet radiation, chlorine radicals are formed in preference to fluorine radicals. This occurs in the upper atmosphere because the energy of the
- (A)
\text{C}-\text{F}bond (484\text{ kJ mol}^{-1}) is greater than the energy of the ultraviolet radiation - (B)
\text{C}-\text{Cl}bond (340\text{ kJ mol}^{-1}) is greater than the energy of the ultraviolet radiation - (C)
\text{C}-\text{Cl}bond is less than the energy of the\text{C}-\text{F}bond - (D)
\text{C}-\text{Cl}bond corresponds to the energy of the ultraviolet radiation
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