In which one of the following changes there are transfer of five elect

1.	In which one of the following changes there are transfer of five electrons [NCERT 1982]
A.	\[MnO_{4}^{-}\to \,M{{n}^{2+}}\]
B.	\[CrO_{4}^{2}\to \,C{{r}^{3+}}\]
C.	\[MnO_{4}^{2-}\to \,Mn{{O}_{2}}\]
D.	\[C{{r}_{2}}O_{7}^{2-}\,\to \,2C{{r}^{3+}}\]
Answer» B. \[CrO_{4}^{2}\to \,C{{r}^{3+}}\]

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