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  • The wavelength of the first line of Balmer series is 6563 Å . The Rydberg constant for hydrogen is aboutOption: 1 <img alt="\mathrm{1.09\times

The wavelength of the first line of Balmer series is 6563 Å . The Rydberg constant for hydrogen is about

Option: 1

\mathrm{1.09\times 10^{7}\, per\, m}


Option: 2

\mathrm{1.09\times 10^{8}\, per\, m}


Option: 3

\mathrm{1.09\times 10^{9}\, per\, m}


Option: 4

\mathrm{1.09\times 10^{5}\, per\, m}


Answers (1)

best_answer

\mathrm{\frac{1}{\lambda}=R\left[\frac{1}{4}-\frac{1}{9}\right]=\frac{5 R}{36}}

\mathrm{\therefore R=\frac{36}{5 \lambda}=\frac{36}{5 \times 6563 \times 10^{-10}}=1.09 \times 10^7 \mathrm{~m}^{-1}}

Posted by

Irshad Anwar

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