1.

The chromate and dicharomate ions are respectively

A.  \[CrO_{4}^{{{2}^{-}}}\] and \[C{{r}_{2}}O_{7}^{2-}\]     
B.  \[C{{r}_{2}}O_{7}^{2-}\] and \[CrO_{4}^{-}\]
C.  \[CrO_{4}^{-}\] and \[CrO_{5}^{-}\]
D.         \[CrO_{4}^{2-}\] and \[CrO_{5}^{2-}\]
Answer» B.  \[C{{r}_{2}}O_{7}^{2-}\] and \[CrO_{4}^{-}\]


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