Structure of Atom - Result Question 13
####13. According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
[2011 M]
(a) $n=6$ to $n=1$
(b) $n=5$ to $n=4$
(c) $n=6$ to $n=5$
(d) $n=5$ to $n=3$
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Solution:
- (c) Energy of photon obtained from the transition $n=6$ to $n=5$ will have least energy.
$\Delta E=13.6 Z^{2}(\frac{1}{n_1^{2}}-\frac{1}{n_2^{2}})$
