In hydrogen atom spectrum, (R arrow Rydberg's constant ) A. the maximum wavelength of the radiation of Lyman series is (4)/(3 R) B. the Balmer series lies in the visible region of the spectrum C. the minimum wavelength

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Correct answer: B. A, B and C Only

A. Maximum wavelength of Lyman series (

n=1

to

n=2

):

\frac{1}{\lambda} = R\left(1 - \frac{1}{4}\right) = \frac{3R}{4}

\lambda = \frac{4}{3R}

TRUE

B. The Balmer series lies in the visible region of the spectrum. TRUE

C. Minimum wavelength of Paschen series (

n=3

to

n=\infty

):

\frac{1}{\lambda'} = R\left(\frac{1}{9}\right)

\lambda' = \frac{9}{R}

TRUE

D. Minimum wavelength of Lyman series (

n=1

to

n=\infty

):

\frac{1}{\lambda} = R\left(1\right)

\lambda = \frac{1}{R}

, NOT

\frac{5}{4R}

FALSE

So A, B and C are correct.

In hydrogen atom spectrum, (R arrow Rydberg's constant ) A. the...

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