Q. 255.0( 1 Vote )

Deuterium was dis

Answer :

For first Lyman series, we have,



for hydrogen,


------(1)


And for deuterium,


------(2)


Dividing 1 by 2 we get,






Now we know that,


and





Now taking common from numerator, we get,






By binomial expansion we get,





Now putting the values respectively, we get,




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