Saved Bookmarks
| 1. |
Metals likeCu, Ag, Zn,Hg andPb occurin natureassulphidesratherthan oxides ? Why ? |
| Answer» Solution :Thecationsof thesemetals, i.e.,` Cu ^( 2+ ), Zn ^(2 +), AG^( 2+)andHg^(2+)` (pseudo inertgas configuration,` (n- 1 ) s ^(2) g ^(6)d ^(10)) andPb^(2+) ` (inertpairconfiguration,`((n-1) s ^(2)p^( 6)d ^( 10)n s ^(2)) ` havehighpolarizingpowrandhencecan easilypolarize thebiggersulphideion thanthesmalleroxideion. Asaresult,sulphidesof thesemetalsareevenmorestablethan the OXIDESAND hencethese metals occurin NATUREIN formoftheirsulphidesratherthanoxides. | |