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Out of Cr^(2+) and Cr^(3+), which one is...

Out of `Cr^(2+)` and `Cr^(3+)`, which one is stable in aqueous solution?

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`Cr^(3+)` is more stable than `Cr^(2+)` in aqueous solutions. It is because of greater hydration enthalpy of `Cr^(3+)` ions due to its small size and higher charge.
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KALYANI PUBLICATION-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why does vanadium pentoxide acts as a catalyst?

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  2. Name the metal with tripositive ion represented by the configuration :...

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  3. Out of Cr^(2+) and Cr^(3+), which one is stable in aqueous solution?

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  4. Give an example of disproportionation reaction

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  5. Which elements are called ferrous metals ?

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  6. What are platinum metals ?

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  7. What is the highest oxidation state shown by a transition element.

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  8. Name one ore each of manganese and chromium.

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  9. What do you mean by 18 carat gold ?

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

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

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

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

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

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

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

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  17. Why do most transition metal ions exhibit paramagnetism ?

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

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

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

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