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The electronic configuration of an eleme...

The electronic configuration of an element is `3d^(5)4s^(1)`. Write its (i) most stable oxidation state
(ii) most oxidising state.

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This electronic configuration corresponds to Z = 24 i.e., Cr.
(i) Most stable oxidation state is `Cr^(6+)`. (ii) Most oxidising state is `Cr^(3+)`.
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U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -VERY SHORT ANSWER QUESTIONS (1 mark each)
  1. The d-electron configuration of Mn^(2+) and Ti^(2+) is d^(5) and d^(2)...

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  2. What is the general formula by which the electronic configuration of t...

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

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

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

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

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

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

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

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  10. Why do most transition metal ions exhibit paramagnetism ?

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

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

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  13. Which trivalent cation is largest in lanthanoid series?

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

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

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

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  17. Write outer electronic configuration of lanthanoids.

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  18. Name the first element of Group 3.

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

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

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