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(C) The energy required to dissociate a carbon monoxide molecule is $E = 11 \ eV$. Converting this energy into Joules: $E = 11 	imes 1.6 	imes 10^{-

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ultraviolet region

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(C) The energy required to dissociate a carbon monoxide molecule is $E = 11 \ eV$. Converting this energy into Joules: $E = 11 	imes 1.6 	imes 10^{-19} \ J = 1.76 	imes 10^{-18} \ J$. Using the relation $E = h
u$,where $h = 6.626 	imes 10^{-34} \ J \cdot s$ is Planck's constant and $
u$ is the frequency: $
u = \frac{E}{h} = \frac{1.76 	imes 10^{-18}}{6.626 	imes 10^{-34}} \approx 2.66 	imes 10^{15} \ Hz$. The electromagnetic spectrum range for ultraviolet radiation is approximately $7.5 	imes 10^{14} \ Hz$ to $3 	imes 10^{16} \ Hz$. Since the calculated frequency $2.66 	imes 10^{15} \ Hz$ falls within this range,the radiation belongs to the ultraviolet region.

One requires $11 \ eV$ of energy to dissociate a carbon monoxide molecule into carbon and oxygen atoms. The minimum frequency of the appropriate electromagnetic radiation to achieve the dissociation lies in

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