The wavelength of the line of the Balmer group for the hydrogen spectrum is
A)105 nm.
B)286 nm.
C)371 nm.
D)434 nm.

Question

The wavelength of the  line of the Balmer group for the hydrogen spectrum is
A)105 nm. 
B)286 nm. 
C)371 nm. 
D)434 nm.

Quizplus · Accepted Answer

The Balmer series is a series of hydrogen spectral lines produced by electron transitions from energy levels n ≥ 3 to n = 2. The 11ea821f_c64c_2fc1_bbd8_791f6eb945fc_TB1516_11_TB1516_11_TB1516_11 line corresponds to the transition from n = 4 to n = 2. The formula for calculating the wavelength of these lines is λ = 1.097 × 10^-2 (1/2^2 - 1/n^2), where n is the energy level of the electron. Plugging in n = 2 and n = 4, we get λ = 434 nm. Therefore, the correct answer is D.

The Wavelength of the Line of the Balmer Group