Example 30. What transition in the ...
Question
Fullscreen

Example 30. What transition in the hydrogen spectrum have the same wavelength as Balmer transition, n = 4 10 n=2, of Het spectrum? (I.L.T. 1993)

JEE/Engineering Exams
Chemistry
Solution
82
Rating
3.0 (3 ratings)
Fullscreen
For ( mathrm{He}^{+} ) [ begin{aligned} frac{1}{lambda} &=2^{2} R_{H}left[frac{1}{n_{1}},-frac{1}{n_{2}}right] &=(2)^{2} R_{H}left[frac{1}{(2)^{2}}-frac{1}{(4)^{2}}right]=R_{H} frac{3}{4} ldots(1) end{aligned} ] For ( H ) atom, [ begin{array}{c} frac{1}{lambda}=R_{H}left(frac{1}{n_{1}^{2}}-frac{1}{n_{2}^{2}}right] ldots-(11) (1)=(11), text { we gut } frac{1}{n_{1}}-frac{1}{n_{2}}=frac{3}{4} Rightarrow n_{1}=1 text { & } n_{2}=2 end{array} ] ( therefore ) transition ( n=2 ) to ( n=1 ) in ( mathrm{Hatum} ) will bave same warelength ay tranition, ( n=4 ) te ( n=2 ) in ( H e^{t} )
Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free