Examine the internal structural parameters of the stable dichromate ion (). Which of the following s — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Dichromate consists of two tetrahedral $CrO_4$ units sharing a single corner oxygen. Resonance equalizes the 6 outer terminal bonds (giving them double-bond character, thus shorter). The 2 inner bridging bonds are single bonds (longer). The bridge angle is distinctly bent ($\approx 126^\circ$).