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Why is Pt(IV) more stable than Ni(IV)....

Why is Pt(IV) more stable than Ni(IV).

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Sum of four ionization enthalpies for nickel is much higher than the sum of the four ionization enthalpies of platinum, i.e., energy required to remove four electrons from platinum is much less than the energy required to remove four electrons from nickel
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ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Out of Al, Zn, Mg and Fe which is the densest element?

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  2. Which is more stable Fe^(2+) or Fe^(3+)? Why ?

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  3. Why is Pt(IV) more stable than Ni(IV).

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  4. K2 Pt Cl6 is well known compound while corresponding Ni compound is n...

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  5. Why is electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2 n...

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  6. How does the ionic/covalent character of the compounds of a transition...

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  7. Why do transition elements have high value of hydration enthalpy?

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  8. Why Fe^(2+) has smaller radius than Mn^(2+) ?

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  9. Why do most transition metal ions exhibit paramagnetism ?

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  10. How is the magnetic moment of a species related to the number of unpai...

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  11. The electronic configuration of Co^(2+) and Cu^(2+) is d^7 and d^(9) r...

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  12. Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

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  13. Why is Ti^(2+) ion paramagnetic ?

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  14. One unpaired electron in an atom contributes a magnetic moment of 1.1 ...

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  15. Why do transition elements shows variable oxidation states?

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  16. Why are complex ions readily formed when water molecules react with th...

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  17. Arrange the following in increasing order of basic character: MnO, ...

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  18. Arrange the following in increasing order of acidic character: CrO,...

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  19. What happens when KMnO4 is heated ?

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  20. What is Baeyer's reagent ?

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