Chemistry

Ionization energy measures the energy needed to remove an electron from an atom or ion. For the sixth ionization energy, you're removing the sixth electron, so you need to start with sulfur that's already lost five electrons. The key is writing the correct ion as your reactant—it should have a $+5$ charge—and showing one electron being stripped away to create the $+6$ ion.

Ionization energy measures the energy needed to remove an electron from an atom or ion. For the sixth ionization energy, you're removing the sixth electron, so you need to start with sulfur that's already lost five electrons. The key is writing the correct ion as your reactant—it should have a $+5$ charge—and showing one electron being stripped away to create the $+6$ ion.