They will be divided into four groups or sections, as in the following: Organogens—oxygen, nitrogen, hydrogen, carbon Sulphuroids—sulfur, selenium, phosphorus Chloroides—fluorine, chlorine, bromine, iodine Boroids—boron, silicon.
tHEy WilL be dIVIdEd intO foUr GrouPS or secTio,ns, as in the fOlloWing: orgAnogens—oxygen, nitrogEn hydroGEn, caRbon sulpHuroIds—SUlFur selenium, pHOsPHOrus chLoroiDes—flUoRi,ne, chLorIne, broMine, iodiNE boRoIDs—boroN, SIlIcoN.