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+// Scilab Code Ex2.22 Wavelength of second number of Balmer series of hydrogen: Pg:60 (2008)

+n1 = 2;    // Principle quantum number of second orbit in H-atom

+n2 = 3;    // Principle quantum number of third orbit in H-atom

+R = 1.097e+07;    // Rydberg constant, per metre

+L1 = 1/((1/n1^2 - 1/n2^2)*R);    // Wavelength of first Balmer line, m

+n2 = 4;    // Principle quantum number of third orbit in H-atom 

+L2 = 1/((1/n1^2 - 1/n2^2)*R);    // Wavelength of second Balmer line, m

+L_ratio = L2/L1;    // Wavelength ratio of second and first line of Balmer series

+L1 = 6563e-010;    // Given wavelength of first line of Balmer series, m

+L2 = L_ratio*L1;    // Wavelength of second Balmer line, m

+printf("\nThe wavelength of second Balmer line = %4e m", L2);

+// Result 

+// The wavelength of second Balmer line = 4.861481e-007 m 
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