All Lyman emission lines are transitions from the excited state to _____ state.

ground state

To determine the state to which Lyman emission lines transition from the excited state, we need to refer to the energy levels of the hydrogen atom. The Lyman series refers to the transitions of electrons in hydrogen where they fall from higher energy levels (excited state) to the first energy level (n=1). Therefore, all Lyman emission lines are transitions from the excited state to the ground state (n=1).