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Maximum oxidation state is shown by:...

Maximum oxidation state is shown by:

A

Os

B

Mn

C

Cr

D

Co

Text Solution

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The correct Answer is:
A
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. First IE of 5d seties element are higher than those of 3d and 4d serie...

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  2. Ionisation energies of Ni and Pt in KJmol^(-1) are given below {:(,u...

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  3. Maximum oxidation state is shown by:

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  4. Which of the following statement is false?

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  5. Which of the following has the maximum number of unpaired d-electron?

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  6. The highest magnetic moments is shown by the transition metal ion wit...

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  7. Magnetic moment of Cr^(+2)(Z=24),Mn^(+2)(Z=25) and Fe^(2+)(Z=26) are x...

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  8. The magnetic moment of .(25)Mn in ionic state is sqrt(15)B.M, then Mn ...

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  9. The colour of transition metal ion is attributed to:

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  10. MnO(4)^(-) is intense pint colour, though Mn is (+7) oxidation state, ...

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  11. The yellow colour of chromates changes to orange on acidification due ...

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  12. Catalytic activity of the transition metals and their compounds can be...

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  13. KMnO(4) is the oxo salt of :

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  14. The solubility of silver bromide in hypo solution (excess) is due to ...

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  15. In dilute alkaline solution,MnO(4)^(-) changes to:

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  16. Cl2 gas is obtained by various reactions select the reactions from the...

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  17. The developer used in photography is an alkaline solution of:

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  18. When acidified solution of K(2)Cr(2)O(7) is shaken with aqeous solutio...

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  19. Which of the following compounds is used as the starting material for ...

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  20. CrO(3) dissolves in aqueous NaOH to give:

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