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Questions  

In the following atoms and moleculates for the transition from n= 2  to n = 1, the spectral line of minimum wavelength will be produced by

a
Hydrogen atom
b
Deuterium atom
c
Uni-ionized helium
d
di-ionized lithium

detailed solution

Correct option is D

1λ=RZ2112−122For di-ionised lithium the value of Z is maximum.

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