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Which of the following statements is cor...

Which of the following statements is correct?

A

The lesser number of oxidation states in 3d-series in the begin inning of the series is due to the presence of too few electrons to loose or share

B

The lesser number of oxidation states in 3d-series towards the end of the series is due to the presence of too many electrons and thus fewer orbitals to share electrons with the ligands.

C

A and B both

D

None is correct

Text Solution

Verified by Experts

The correct Answer is:
C
The lesser number of oxidation states in the beginning of series can be due to the presence of smaller number of electrons to lose or share (Sc,Ti). On the other hand, at the extreme right hadn side and (Cu,Zn), lesser number of oxidation state is due to large number of d electrons so that only a fewer orbitals are available in which the electron can share with other for higher valence.
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Only one option correct type
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  2. Atoms of the transition elements are smaller than those of the s-block...

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  3. Which of the following statements is correct?

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  4. E^(Theta) values for the couples Cr^(3+)//Cr^(2+) and Mn^(3+)//Mn^(2+)...

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  5. A metal ion from the first transition series has a magnetic moment (ca...

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  6. Which one of the following ionic species will impart colour to an aque...

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  7. CuSO(4).5H(2)O is blue in colour because

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  8. When AgNO(3)(aq) reacts with excess of iodine, we get:

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  9. When K(4)[Fe(CN)(6)] is added to FeCl(3) , the complex compound formed...

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  10. FeCl(3).6H(2)O is actually:

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  11. Aqueous solution of which of the following ions is green?

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  12. Aqueous solution of (P) and (Q) are violet. (P) turns green on oxidati...

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  13. In the reaction,2CuCl(2)+2H(2)O+SO(2)toA+H(2)SO(4)+2HCl,A is

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  14. German silver is an alloy of copper and:

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  15. When copper is placed in the atmosphere for sufficient time, a green c...

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  16. FeCl(3) dissolves in

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  17. When AgNO(3)(aq) reacts with excess of iodine, we get:

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  18. ZnO+CoOoverset(Delta)toX: product 'X' colour is

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  19. The compound that gets oxidised even on exposure to atmosphere is:

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  20. The +3 ion of which one of the following has half filled 4f subshell?

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