When writing a complete electron configuration, you write the filled sublevels in order first, and then if there is a partially filled sublevel, you write it last in the sequence. You can identify the last sublevel containing electrons by finding the element in the periodic table, and determining which block and sublevel the element corresponds to. Identify the last occupied sublevel, which can be completely or partially filled, for each of the following elements. Drag the appropriate items to their appropriate bins. View Available Hint(s) for Part A ResetHelp Cm Ca Na Cl Sm Sn Os Zn 3s droppable 3p droppable 3d droppable 4s droppable 4f droppable 5p droppable 5d droppable 5f droppable