Thorium
Energy levels of neutral Thorium - 232Th I
Energy levels of singly-ionized Thorium - 232Th II
Energy levels of doubly-ionized Thorium - 232Th III
Energy levels of trebly-ionized Thorium - 232Th IV
Energy levels of seven- to fifteen times ionized Thorium - 232Th VIII - Th XVI
Energy levels of sixty-trebly times ionized Thorium - 232Th LXIV