## Chemistry and Chemical Reactivity (9th Edition)

a) All these lines are in the infrared spectrum. b) No. c) The 837.761 nm is the most energetic because it has a lower wavelength (higher frequency). d) $c=\lambda\times\nu$ $\nu=2.998\times10^8\ m/s\div 837.761 \times10^{-9}\ m=3.58\times10^{14}\ 1/s$ $E=h\times\nu$ $E=6.626\times10^{-34}\ J.s\times 3.58\times10^{14}\ 1/s=2.37\times10^{-19}\ J$