third period contains 8 elements,out of these elements how many elements are in non metals ? Share with your friends Share 0 Kabilan answered this 5 namely Si,P,S,Cl,Ar are non metals 0 View Full Answer Pradeep Krishna answered this In third period of mordern periodic table 5 elements are non-metals.They are:silicon,phosporous, sulphur, chlorine, argon 0
