Izakhi zibizwa ngokuthi i-group 17
Impendulo ithi: B- halogens.
Funda ngama-elementi eqembu le-17, abizwa ngokuthi ama-halogen, futhi afake izakhi ezibalulekile ezifana ne-fluorine, i-chlorine, i-bromine, ne-iodine.
Izakhi zeqembu le-17 zisetshenziswa kabanzi embonini nakwezokwelapha, njengoba i-chlorine isetshenziswa ekwenzeni izibulala-zinambuzane nezibulala-zinambuzane zezolimo, futhi i-fluorine isetshenziswa ekwenzeni izitho zokufakelwa zamazinyo nemithi.
Lezi zakhi zibuye zibe nezimpawu zamakhemikhali eziyingqayizivele, ezikwazi ukusebenzisana nezinye izakhi eziningi, futhi zisetshenziselwa ukukhipha usawoti emanzini ezindaweni ezimbalwa zomhlaba.
Ngakho-ke, kufanele sinakekele lezi zakhi ezibalulekile futhi sizisebenzise ezindaweni eziningi ezahlukene zokuphila kwansuku zonke.
