# Does iron (II) sulfide have a high melting point? Why or why not?

This site reports the melting point of $F e S$ as $1188$ ""^@C.
This melting point is reasonably high for an ionic species; as we would expect given the $2 +$, $2 -$ charges on each of the ions. Clearly, the sulfide is non-molecular, which accounts for the high melting point. We should, however, make the comparison with $F e O$, which is congeneric with the sulfide. This site reports the melting point as $1377$ ""^@C. Why do you think the melting point of the oxide is greater?