When acidified potassium dichromate is treated with hydrogen peroxide () in an organic ethereal medi — d and f Block Elements Chemistry Question

💡 Solution & Explanation

The reaction yields Chromium(VI) peroxide ($CrO_5$). It features a distinct "butterfly" geometry with one $Cr=O$ double bond (oxo oxygen, $-2$) and two peroxy linkages (four oxygens at $-1$ each). The calculation $x + 4(-1) + 1(-2) = 0$ perfectly confirms Chromium is in the $+6$ state.