The wavelength of spectral line obtained... | Atoms | JEE Main 2026

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JEE MAIN 2026

24-01-2026 S2

Question

The wavelength of spectral line obtained in the spectrum of $\mathrm{Li}^{2+}$ ion, when the transition takes place between two levels whose sum is 4 and difference is 2 , is

Select the correct option:

A

$2.28 \times 10^{-7} \mathrm{~cm}$

B

$2.28 \times 10^{-6} \mathrm{~cm}$

C

$1.14 \times 10^{-7} \mathrm{~cm}$

D

$1.14 \times 10^{-6} \mathrm{~cm}$

✓ Correct! Well done.

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Solution

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