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Question
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
visible region.
infrared region.
ultraviolet region.
microwave region.
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Solution
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 ultraviolet region.
Explanation:
Given energy required to dissociate a carbon monoxide moleule into carbon and oxygen atoms E = 11eV
We know that E = hv, where h = 6.62 × 10–34 J – s
v = frequency
⇒ 11 eV = hv
⇒ ` v = (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.
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