§10.6 Photochemistry 6.1 Brief introduction of light 3×105m3.98×108kJmo1 radIo s=h 3×101m3.98×104 kJ mol1 micro-wavel 6×104m199×101 k mol1 Microwave Ifar-infrared I chemistry 3×105m3.99 k. mol1 Inear-infrared 800 nm 149.5 kJ mol-1 visible 400 nm 299.0 kj mol-1 photochemistry lultra-violet I 150 nm 797.9 kj mol-1 vacuum violet 50nm239×104 kJ mol1 radiochemistry 5nm1.20×109 kJ mol1 I X-ray6.1 Brief introduction of light §10. 6 Photochemistry