Question

What is the shortest wavelength in the paschen series of li2+ ion?

Answer 1

Answer:

in paschenn series which starts from n=3 the wave will come from infinity and

as we apply the formula

1/lambda = RZ^2[1/(n1)^2 -1/ (n2)^2]

 

1/lambda = R * 9 [1/9 – 1/ infinity]

 

1/lambda = R * 1

 

lambda = 1/R