According to the hydrogen spectrum classifications, the Balmer series corresponds to transitions where the electron terminates at the second energy level ($n_f = 2$) from higher energy levels ($n_i > 2$) . The spectral lines are named sequentially based on the initial orbit:

• First line ($H_{\alpha}$): Transition from $n = 3$ to $n = 2$.
• Second line ($H_{\beta}$): Transition from $n = 4$ to $n = 2$ . Since the electron jumps from a higher orbit ($n=4$) to a lower orbit ($n=2$), energy is emitted, resulting in an emission line, not an absorption line.