Chlorine atoms are formed by photochemical reactions of chlorofluorocarbons in the upper atmosphere. Using the average bond energy of the C—Cl bond in Table 8.8, calculate the wavelength of radiation with sufficient energy to break the C—Cl bond. In what region of the electromagnetic spectrum does this fall?

Data given in Table 8.8

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TABLE 8.8 Some Average Bond Dissociation Enthalpies (kJ/mol)* Single Bonds F Si H C N 0 FSP Si S CI Br I N=N N=N H C 436 413 346 C=N C=N 0=0 (in 0₂) N 391 305 163 0 463 565 358 485 201 283 146 418 945 615 887 498 155 P 328 322 452 565 222 335 490 201 Multiple Bonds C=C C=C C=0 C=O (in CO₂) C=0 S 347 272 339 192 218 201 284 253 249 293 381 310 326 255 242 - CI Br 432 366 285 226 216 193 610 835 745 803 1046 I 299 213 201 278 234 184 - 208 175 151