Question

what is the minimum wavelength of pfund series if the minimum wavelength of lymen series is 8cm?​

Answer 1

?ANSWER

For lyman series,

Maximum wavelength implies minimum transition energy which is for n 2

=2→n 1 =1,E=10.4eV.

Minimum wavelength implies maximum transition energy which is for n 2 =∞→n 1

=1,E=13.6eV.

Therefore,

λ

max

=hc/E

min

=121nm,λ

min

=hc/E

max

=91nm.

Answer 2

Explanation:

91 nm

9.1*10^-8m

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