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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 in aqueous solution. This is due to greater hydration enthalpy due to smaller size and higher charge.
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U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -VERY SHORT ANSWER QUESTIONS (1 mark each)
  1. What is the general formula by which the electronic configuration of t...

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  2. The electronic configuration of an element is 3d^(5)4s^(1). Write its ...

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

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  4. Why are Zn, Cd and Hg normally not regarded as transition elements ?

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  5. Which is the most stable oxidation state of Ti (Z = 22) in aqueous sol...

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  6. Write the ionic equation representing the oxidising property of acidif...

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  7. Why are compounds of transition metals, generally coloured ?

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  8. The size of the trivalent cation in the lanthanoid series decreases st...

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  9. Why do most transition metal ions exhibit paramagnetism ?

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  10. Why does V(2)O(5) act as catalyst ?

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

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  12. Which trivalent cation is largest in lanthanoid series?

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

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  14. Why is bivalent Ti^(2+) ion paramagnetic in nature ?

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

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  16. Write outer electronic configuration of lanthanoids.

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  17. Name the first element of Group 3.

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  18. What is the general electronic configuration of the outer orbitals of ...

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  19. Which element in the first transition series shows the maximum number ...

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  20. Some substances are strongly attached by magnetic field. What do we ca...

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