Hydrogen and its compoundHard

Question

The longest wavelength line in lyman series of hydrogen spectrum is :-

Options

A.1025.8 (A^o)

B.1215.8 (A^o)

C.972.6 (A^o)

D.949.8 (A^o)

Solution

= Z²R
= (1)² × 109700
λ_max = cm
λ_max = × 10⁸ (A^o)
λ_max = 1215.8 (A^o)

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