Question

Wavelength of spectral line obtained in the spectrum of Li² when the transition takes place between two levels whose sum is 4 and difference is 2

Answer 1

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Answer 2

Answer:

Explanation:

Given: The transition takes place between two levels whose sum is 4 and difference is 2

Find: To find the wavelength of spectral line obtained in the spectrum of Li²

Solution: Let us assume that  $n1 + n2 = 4$

                                          and $n1 - n2 = 2$

                                             ∴ $n1 = 1 , n2 = 3$

               Therefore , 1 / λ = $R H$ * $​Zx^{2}$ [  $1 / 1x^{2}$- $1 / 3x^{2}$ ]   (∵ Z = 3 for Li)

                                          = $109678$ $*$ $3x^{2}$ $*$ $8/9$

                                          ∴ λ = $1.14 * 10 nm$

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