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The oxidation state of Cr in compound Cr...

The oxidation state of Cr in compound CrO5 is

A

`+10`

B

`+8`

C

`+6`

D

`+5` .

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Which of the following compounds will give a yellow precipitate with i...

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  2. The yellow solution (X) is

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  3. The oxidation state of Cr in compound CrO5 is

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  4. Describe the formation of Coal

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  5. Why is helium placed in p-block elements although its last electron en...

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  6. The atomic numbers of three lanthanide elements X,Y and Z are 65,68 a...

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  7. Ce (Z = 58) and Yb (Z = 70) exhibit stable +4 and +2 oxidation states ...

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  8. Which of the following statements is not true?

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  9. The questions given below consist of an Assertion and the Reason. Use ...

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  10. Assertion : Cuprous salts are diamagnetic. Reason : Cu has 3d-filled...

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  11. Electronic configuration of Fe^2+.........

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  12. Assertion : La(OH)3 is less basic than Lu(OH)3 . Reason : Basic charac...

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  13. Assertion : FeCl3 reacts with KCNS to give blood red colouration. Re...

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  14. Sodium chloride is used to clear snow from roads. Explain.

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  15. Assertion : Zn^(2+) and Cu^(2+) are colourless. Reason : Both Zn^(2+) ...

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  16. Assertion : There is a continuous decrease in size among lanthanoids. ...

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  17. Assertion : Lanthanoids show a limited number of oxidation states wher...

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  18. Pt^(4+) is less/more stable than Ni^(4+) .

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  19. Match the element in Column I with the property mentioned in Column II

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  20. Find x in the following figures.

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