The Series of Spectral Absorption Lines in the Infrared Part

Multiple Choice

The series of spectral absorption lines in the infrared part of the spectrum, known as the Paschen series, results from atomic transitions in hydrogen atoms in which electrons are lifted from which energy level to all higher atomic energy levels?

A) n = 1 level, the ground state, because all series start here
B) n = 3 level
C) ionization level
D) n = 2 level