Physics, asked by kumarRohit306, 9 months ago

longest wavelength in the Lyman series of hydrogen atom is ??​

Answers

Answered by Anonymous
3

Hey dear♥️

For longest wavelength in Lyman series, the energy difference in two states showing transition should be minimum i.e. n2 = 2

Now see here

</strong><strong>\</strong><strong>l</strong><strong>a</strong><strong>r</strong><strong>g</strong><strong>e</strong><strong> </strong><strong>\frac{1}{λ}  = </strong><strong>Rh</strong><strong> ( \frac{1}{ {1}^{2} }  -  \frac{1}{ {2}^{2} } ) =  <u>\frac{3}{4} </u></strong><strong>Rh</strong><strong>

or

</strong><strong>\</strong><strong>l</strong><strong>a</strong><strong>r</strong><strong>g</strong><strong>e</strong><strong> </strong><strong>λ</strong><strong> =  \frac{4}{3}  \times  \frac{1}{rh}  =  \frac{4}{3 \times 109678}</strong><strong> </strong><strong>= 1215.7 \times  {10}^{ - 8} cm \:  </strong></p><p></p><p><strong>= <u>1215.7</u></strong><strong>A</strong><strong>°</strong></p><p></p><p>

Thank u :)

Similar questions