Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed. (5 marks)

electrons, which are negative particles that are part of the atom, are transferred from potassium to sulfurtwo potassium atoms each lose one electron and they form K+ ions as they have lost negative charge so are left with a positive charge of +1sulfur atoms gain 2 electrons (the ones that are lost from each of the potassium ions) forming S2- ions, so now have a charge of -2the ionic compound formed isions formed would be 2 K+ ions and one S2- ion