Respuesta :
Because you need only 1 atom of magnesium and 1 atom of sulfur to produce magnesium sulfate. Writing a two after each is not correct as that would be dimagnesium disulfide.
Because you need only 1 atom of magnesium and 1 atom of sulfur to produce magnesium sulfate. Writing a two after each is not correct as that would be dimagnesium disulfide.