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First IE of 5d seties element are higher...

First IE of `5d` seties element are higher than those of `3d` and `4d` series elements. This is due to:

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B
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First I.E. 5d elements are higher than those of 3d and 4d elements. This is due to 1) greater effective nuclear charge action on outer valence electrons. 2) greater effective nuclear charge is experience because of weak shielding effect of 4-f orbitals

How will you account for the following : (i) All scandium salt are white. (ii) The first ionisation enthalpy of the 5d transition elements are higher than those of 3d and 4d transition elements in respective group.

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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. The atomic volume of the transition elements are low compared with ele...

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  2. The wrong statement regarding transition metals among the following is...

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  3. First IE of 5d seties element are higher than those of 3d and 4d serie...

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

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  5. Maximum oxidation state is shown by:

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  6. Which of the following statement is false?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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