A) \[CrO_{4}^{2-}\]is tetrahedral in shape
B) \[C{{r}_{2}}O_{7}^{2-}\] has a \[Cr-O-Cr\] bond
C) \[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\]is a primary standard in volumetry
D) \[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\]is less soluble than \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
Correct Answer: B
Solution :
\[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\] is more soluble than \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
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