JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Analyzing +4 | -1

Among the following transitions in hydrogen and
hydrogen-like ion spectrum, which one emits light
of longest wavelength ?

View answer and explanation

Correct option: C

\mathrm{n}=4

\mathrm{n}=3

for

\mathrm{He}^{+}

The transition with the smallest energy difference will emit light of the longest wavelength. Among the given options, n=4 to n=3 for He+ has the smallest energy difference considering the Z² factor, making option C the correct answer.

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