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Transition and Inner Transition Elements — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryTransition and Inner Transition Elements3 Marks
Question
Draw and explain about the structure of chromate and dichromate ion.
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Answer

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  1. Both chromate and dichromate ions are oxo anions of chromium and they are moderately strong oxidising agents.
  2. In both structures, chromium is in +6 oxidation state.
  3. In an aqueous solution, chromate and dichromate ions can be inter convertible, and in an alkaline solution, chromate ion is predominant, whereas dichromate ion becomes predominant in acidic solutions.

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