Saved Bookmarks
| 1. |
Valancies of 20 atoms serialy |
| Answer» Valancies are dertermined by electroic configuration .We divide atom into shells k,l,m etc. And only k shell have 2 e^- other have 8 e^-.we know no. Of electrons in an elememt = its atomic no.by this we can know valencyex:- H At. No. = 1k 1 Hence valency is 1.O at.no =8k. 2L. 6 hence vallency is 2. | |