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The energy levels of a certain atom for ...

The energy levels of a certain atom for first, second and third levels are `E, (4E)/3 and 2E` respectively. A photon of wavelength 'A is emitted fora transition 3 `to` 1. What will be the wavelength of emission for transition 2 `to` 1?

Text Solution

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We know that, change in energy level, `DeltaE = (hc)/lambda `
For `3 ot 1 rArr 2E - E = (hc)/lambda `
`E = (hc)/lambda rArr lambda = (hc)/E`
For `2 to1 rArr (4E)/3- E = (hc)/(lambda.)`
`E /3 = (hc)/(lambda.)`
`lambda. = 3 ((hc)/(E)) rArr lambda. = 3lambda`
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