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One requires 11eV of energy to dissociat...

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.

A

Visible region

B

infrared region

C

Ultraviolet region

D

microwave region

Text Solution

Verified by Experts

The correct Answer is:
C
Here it is given, the energy required to dissociate a carbone monoxide molecule into carbon and oxygen atoms is `E=11eV`
We know that, `E=hf`, where
`h=6.62xx10^(-34)J-s`
`f=frequency`
`implies 11eV=hf`
`f=(11xx1.6xx10^(-19))/(6.62xx10^(-34))=2.65xx10^(15)Hz`
This frequency radiation belongs to ultraviolet region
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