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According to the Bohr Theory, the third from the red end corresponds to which one of the following transitions in the hydrogen atom will give rise to the least energetic photon ?

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a> = 6 to n = 1<br/>n = 5 to n = 4<br/>n = 6 to n = 5<br/>n = 5 to n = 3</p>Solution :`Delta E = 13.6 ((1)/(n_(1)^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)) - (1)/(n_(2)^(2))) Z^(2) eV` <br/> `(1)/(1^(2)) - (1)/(6^(2)) = 1 - (1)/(36) = (35)/(36), (1)/(4^(2)) - (1)/(5^(2)) = (1)/(16) - (1)/(25) = (9)/(400)` <br/> `(1)/(5^(2)) - (1)/(6^(2)) = (1)/(25) - (1)/(36) = (11)/(36 xx 25)` <br/> `(1)/(3^(2)) - (1)/(5^(2)) = (1)/(9) - (1)/(25) =(16)/(225)` <br/> Thus `Delta E` will be <a href="https://interviewquestions.tuteehub.com/tag/minimum-561095" style="font-weight:bold;" target="_blank" title="Click to know more about MINIMUM">MINIMUM</a> for the <a href="https://interviewquestions.tuteehub.com/tag/transition-712134" style="font-weight:bold;" target="_blank" title="Click to know more about TRANSITION">TRANSITION</a> n = 6 to n = 5</body></html>


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