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In K2 Cr2 O7every Cr is linked to:...

In `K_2 Cr_2 O_7`every Cr is linked to:

A

two O-atoms

B

three O-atoms

C

four O-atoms

D

five O-atoms

Text Solution

Verified by Experts

The correct Answer is:
C
The structure of `Cr_2 O_(7)^(2-)` ion is ,
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Assertion : In acidic medium, K_2 Cr_2 O_7 " exists as " Cr_2 O_7^(2-) (orange) while in basic medium it is converted to CrO_4^(2-) (yellow). Reason : K_2 Cr_2 O_7 is hygroscopic in nature and changes colour on reaction with water.

The equivalent weight of 'K_2 Cr_2 O_7' in acidic medium is expressed in terms of its molecular weight (M) as

The equivalentweight of K_(2) Cr_(2) O_7 in acid medium is equal to

BRILLIANT PUBLICATION-THE D-AND F-BLOCK ELEMENTS-QUESTIONS (LEVEL-III)
  1. In K2 Cr2 O7every Cr is linked to:

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  2. A metal M which is not affected by strong acids like conc. HNO3 conc. ...

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  3. The acidic, basic or amphoteric nature of Mn2 O7 ,V2O5, and CrO are re...

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  4. An inorganic compound on strong heating gave a blackish brown powder a...

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  5. MnO(2) overset(I)(to)MnO(4)^(2-)overset(II)(to)MnO(4)^(-) I and II are

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  6. Identify the product and its colour when MnO2 is fused with solid KOH ...

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  7. When manganous salt is fused with a mixture of KNO3 and solid NaOH, th...

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  8. Consider following statements, I. The size of the lanthanide M^(3+) io...

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  9. Most transition metals I:forms sets of compounds which display differe...

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  10. [Fe(H2 O)5 NO]^(2+) is brown-ring complex. In this complex

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  11. When K2 CrO4 is added to CuSO4 solution, there is formation of CuCrO4...

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  12. Select the correct statements(s)

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  13. Which of the following statements are true?

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  14. Although +3 is the characteristic oxidation state for lanthanoids, cer...

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  15. Select correct statements.

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  16. When CO2 is passed into aqueous

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  17. Select correct statements (s)

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  18. Which of the following statements are correct

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  19. Amongst the following, identify the species with an atom in +6 oxidati...

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  20. Which metals are present in german silver?

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  21. The complex forming tendency of a transition metal depends upon:

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