Aditi Chauhan
Last Activity: 10 Years ago
Bond energy of I2 240kJ mol-1 = 240 * 103 J mol-1
= 240 *103/6.023 *1023 J molecule-1
= 3.984 *10-19 J molecule-1
Energy absorbed = hc/λ = 6.626 *10-34 Js *3 *108 ms-1/4500 *10-10 m
= 4.417 * 10-19 J
Kinetic energy = Absorbed energy – Bond energy
∴ Kinetic energy = 4.417 *10-19 – 3.984 *10-19 J
= 4.33 * 10-20 J
∴ Kinetic energy of each atom of iodine
= 4.33 *10-20/2 = 2.165 *10-20