Interpretation:
The list of chromium compounds with +3, +4 and +6 oxidation states of chromium should be determined.
Concept introduction:
The
Oxidation state is also known as oxidation number. It is defined as the numbers which are assign to the elements in a chemical combination and number represents the electrons which an atom can share, lose or gain to form
Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.
Therefore, transfer of electrons refers to the oxidation state.
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