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An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of $$1 \ mL$$ of $$3\% \ H_2O_2$$. a blue alcohol layer was obtained. The blue color is due to the formation of a chromium (VI) compound $$‘X’$$. What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of $$X$$?

A
4
Solution
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Correct option is A. 4
$$CrO_4^{2-} + H_2O_2 + H^+ \rightarrow CrO_5 + H_3O^+$$

Number of oxygen atoms bonded to chromium through only single bonds $$= 4$$

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