One of the emission lines described by the original version of Balmer's formula has wavelength 377 nm. What is the value of n in Balmer's formula that gives this emission line?
A) 12
B) 11
C) 13
D) 14

Question

Quizplus · Accepted Answer

The Balmer series formula for the wavelength of emitted light is given by $ \lambda = B \left( \frac{n^2}{n^2 - 2^2} \right) $, where $ \lambda $ is the wavelength, $ B $ is the Balmer constant (364.50682 nm), and $ n $ is the principal quantum number (greater than 2). For a wavelength of 377 nm, solving the equation for $ n $ gives $ n = 11 $.

One of the Emission Lines Described by the Original Version