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Maximum oxidation state is shown by:...

Maximum oxidation state is shown by:

A

Os

B

Mn

C

Cr

D

Co

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The correct Answer is:
A
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RESONANCE ENGLISH-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. Highest magnetic moments, shown by the transition metal ion with the ...

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

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  8. Spin only magnetic moment of .(25)Mn^(x+)ion is sqrt(15) B.M. Then, t...

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  9. Colour in transition metal compounds in attributed to

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  10. MnO(4)^(-) is of intense pink colour, though Mn is in (+7) oxidation s...

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

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  12. The catalytic activity of transition metals and their compounds is asc...

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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. Cl(2) gas is obtained by various reactions but not by:

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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(4) dissolves in aqueous NaOH to give :

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