B$Na_2Cr_2O_7$ એ કદમાપક પૃથ્થકરણમાં પ્રાથમિક માપદંડ છે
C$CrO_4^{2-}$ સમચતુષ્કલકીય આકારનો છે
D$CrO_7^{2-}$ માં $Cr- O- Cr$ બંધ હોય છે.
JEE MAIN 2015, Diffcult
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a \(Na_2Cr_2O_7\) is used as primary standard in volumetry
Hydration energy of \(Na^+\) is greater then \(K^+\). Because of smaller size of \(Na^+\) , \(Na_2Cr_2O_7\) is more soluble than \(K_2Cr_2O_7\).
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