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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

Ultaviolet region

D

microwaves region .

Text Solution

Verified by Experts

The correct Answer is:
A
Given , energy ` E= 11 eV = 11xx 1.6 xx10^(-19 ) J`
also `E=hv`
where `h=` Plank.s cosntant
` = 6.62 xx 10^(-34) m^2 Kg //s`
`v= (E )/(h ) = ( 11 xx1.6xx 10^(-19) )/( 6.62 xx 10^(-34))Hz`
`=2.66 xx 10^(15) Hz `
this frequency lies in the ultraviolet region of electromagnetic radiation .
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Knowledge Check

  • Find the appropriate electromagnetic radiation required to achieve the dissociation of a carbon monoxide molecule into cabon and oxygen atom which required 11 eV energy:

    A
    visible region
    B
    infrared region
    C
    ultraviolet region
    D
    micorwave region

  • In a carbon monoxide molecule, the carbon and oxygen atoms are separated by a distance of 1.12 xx 10^(-10) m. The distance of the centre of mass from the carbon atom is

    A
    `0.48 xx 10^(-10)` m
    B
    `0.51 xx 10^(-10) m`
    C
    `0.56 xx 10^(-10) m`
    D
    `0.64 xx 10^(-10)` m

  • In a carbon monoxide molecule, the carbon and the oxygen atoms are separted by a distance 1.12 xx 10^(10) m. The distance of the centre of mass from the carbon atom is

    A
    ` 0.64 xx 10^(-10)m`
    B
    `0.56xx10^(-6) `m
    C
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