D-And F-Block Elements Ques 481

Question: Which of the following statements is false-

Options:

A) Na2Cr2O7 is less soluble than K2Cr2O7 .

B) Na2Cr2O7 is primary standard in volumetry.

C) CrO42  is tetrahedral in shape.

D) Cr2O72 has a CrOCr bond.

Show Answer

Answer:

Correct Answer: A

Solution:

bond in Cr2O72 Na2Cr2O7 is used an primary standard in volumetry. Hydration energy of Na+ is greater than K+ because of smaller size of Na+,Na2Cr2O7 is more soluble than K2Cr2O7.



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