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Answer[19:25, 26/05/2020] Jio: The given series of lines are in the visible region and thus appears to be Balmer series. As we know for Balmer series n1=2:and we have to find out at first n2 for the wavelength 410.29 x 10–7 cm
If λ = 410.29 x 10–7 cm and n1 = 2
n2 may be calculated for the last line using the formula:
1/ λ = R [ 1/ n12 - 1/n22 ]
1 / 410.29 x 10-7 = 109673 cm–1 [ 1/ 22 - 1/n22 ]
n2 = 6
Thus next line will be obtained during the jump of electron from 7th to 2nd shell i.e.
1 / λ = R [ 1 / 22 - 1/72 ] = 109673 [ 1/4 - 1/49 ]
λ = 397.2 x 10–7 cm = 397.2 nm
The wavelength for next line will be 397
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