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A photon having lambda = 854 Å cause the...

A photon having `lambda = 854 Å` cause the ionization of a nitrogen atom. Give the I.E. per mole of nitrogen in KJ

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The correct Answer is:
`1403kJ//mol`
`IE=(hc)/(lambda)=(1240)/(85.4)`
`=(1240)/(85.4)xx96.368kJ//"mole"~~1399.25kJ//"mole"`
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