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Question

Consider the following two electronic transition possibilities in hydrogen atom as:
(1) The electron drops from third Bohr's orbit to second Bohr's orbit followed with the next transition from second to first Bohr's orbit.
(2) The electron drops from third Bohr's orbit to first Bohr's orbit directly.
Then the statement :
"The sum of the energies for the transitions n=3 to n=2 and n=2 to n=1 = the energy of transition for n=3 to n=1."
Enter 1 if true, else enter 0.

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Solution

ΔE=RH[1n211n22]
For 3 to 2 ΔE32=RH[122132]
For 2 to 1 ΔE21=RH[112122]
For 3 to 1 ΔE31=RH[112132]
It is evident from Eqs. (i),(ii) and (iii), that ΔE31=ΔE32+ΔE21
(b) Also,E=hv; thus frequencies are also additive.
But E=hcλ and thus wavelength are not additive.

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