Chemistry

Problem

\text{Li}^{++}

, electron in first Bohr orbit is excited to a level by a radiation of wavelength

\lambda

. When the ion gets deexcited to the ground state in all possible ways (including intermediate emissions), a total of six spectral lines are observed. What is the value of

\lambda

? [Main 10 April 2019 II] (Given :

h = 6.63 \times 10^{-34}

Js;

c = 3 \times 10^8

^{-1}

) a. 11.4 nm b. 9.4 nm c. 12.3 nm d. 10.8 nm

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