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Which of the following statements is fal...

Which of the following statements is false?

A

`Na_(2)Cr_(2)O_(7)` is less soluble tha `K_(2)Cr_(2)O_(7)`

B

`Na_(2)Cr_(2)O_(7)` is primary standard in volumentry

C

`CrO_(4)^(2-)` is tetrahedral in shape

D

`Cr_(2)O_(7)^(2_` has a Cr-O-Cr bond

Text Solution

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The correct Answer is:
A
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. Four successive members of the first row transition elements are liste...

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  2. Which series of reactions correctly represents chemical rections relat...

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  3. The equation which is balanced and represents the correct product(s) i...

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  4. Match the catalysts to the correct processes :

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  5. The colour of KMnO(4) is due to

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  6. Chloro compound of vanadium has only spin magnetic moment of 1.73 BM. ...

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  7. Which one of the following exhibits the largest number of oxidation st...

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  8. Copper becomes green when exposed to moist air for a long period. This...

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  9. Which of the following statements is false?

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  10. Which one of the following species is stable in aqueous solution?

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  11. The transition metal ions responsible for color in ruby and emerald ar...

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  12. The pair of compounds having metals in their highest oxidation state i...

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  13. When XO(2) is fused with an alkali metal hydroxide in presence of an o...

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  14. The highest value of the calculated spin-only magnetic moment (in BM)...

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  15. The transition element that has lowest enthalpy of atomisation, is :

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  16. The 71^(st) electron of an element X with an atomic number of 71 enter...

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  17. The element that usucally dose NOT show variable oxidation states is ...

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  18. underline(A)overset(4KOH,O(2))to2underline(B)+2H(2)O 3underline(B)ov...

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  19. the pair of metal ions that can give a spin - only magnetic moment o...

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  20. The correct order of atomic radii is:

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