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Oxidation number of osmium (Os) in OsO(4...

Oxidation number of osmium `(Os)` in `OsO_(4)` is

A

`+6`

B

`+7`

C

`+5`

D

`+8`

Text Solution

Verified by Experts

The correct Answer is:
D
`+8`
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MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-COMPETITION FILE (MULTIPLE CHOICE QUESTION ((A) MULTIPLE CHOICE QUESTION WITH ONLY ONE CORRECT ANSWER))
  1. Which of the following ions does not give coloured solution ?

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  2. Which metal has the lowerst melting point?

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  3. Oxidation number of osmium (Os) in OsO(4) is

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  4. The highest oxidation state shown by manganese in its compounds is

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  5. The colour of d-block elements is due to:

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  6. The number of unpaired electron in Ni^(2+) is

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  7. The magnetic moment of a transition metal ion has been found to be 3.8...

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  8. Which one of the elements with the following outer orbital configurati...

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  9. Which of the following has positive M^(2+)(aq) standard reduction elec...

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  10. Which of the following ions has smallest radius?

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  11. In which of the following ions, the colour is not due to d-d transitio...

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  12. When potassium dichromate is heated with potassium hydroxide and the s...

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  13. In a reaction, K2 MnO4 is converted into KMnO4 . The change in the...

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  14. Mn3O4 is a mixed oxide of

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  15. The equivalent weight of KMnO(4) in (a) neutral medium, (b) acidic med...

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  16. Which of the following is an acidic oxide ?

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  17. The number of electrons involve in the equation CrO4^(2-)rarrCr2O7^(2...

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  18. The oxidation state of Cr in Cr(2)O(7)^(2-) is

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  19. In strongly alkaline medium, MnO4^- MnO4^(-) + e^(-) to MnO4^(2-) ...

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  20. In acidic medium, equivalent weight of K(2)Cr(2)O(7) (molecular weight...

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