Calculating the enthalpy of formation of sodium chloride requires knowing this quantity for gaseous sodium.
Cotton and Murillo discovered a ditungsten paddlewheel complex with an extremely low value of this quantity, which equals the negative energy of the HOMO, according to Koopmans' theorem. Calculating the enthalpy of formation of sodium chloride requires knowing this quantity for gaseous sodium. Mulliken electronegativity is the average of electron affinity and this quantity, which generally increases from left to right and decreases from top to bottom on the periodic table. For 10 points, name this energy required to remove the outermost electron from an atom.
Cotton and Murillo discovered a ditungsten paddlewheel complex with an extremely low value of this quantity, which equals the negative energy of the HOMO, according to Koopmans' theorem.
ionization energy [or ionization potential; or IE; or IP]