One requires `11eV` 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.

Options

A. visible region
B. infrared region
C. ultraviolet region
D. microwave region

Answer

C

Explanation

Given energy required to dissociate a carbon monoxide moleule into carbon and oxygen atoms E=11 eV
We know that E=hv, where h `=6.62 xx 10^(-34) J-s`
v= frequency
`rArr " " 11 eV =hv`
`rArr " "v=(11xx1.6xx10^(-19))/(6.62 xx 10^(-34)) J`
`=(11 xx 1.6 xx 10^(-19))/(6.62 xx 10^(-34)) J`
`=2.65 xx 10^(-15) Hz`
This frequency radiation belongs to ultraviolet region.