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Electronic structure of… is 3d^(3)4s^(0)...

Electronic structure of… is `3d^(3)4s^(0)`

A

`Cr^(2+)`

B

`Mn^(4+)`

C

`Mn^(3+)`

D

`Fe^(3+)`

Text Solution

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The correct Answer is:
B
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  2. What valency of all lanthanide series elements?

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  3. State the oxidation state of Cerium [Ce]

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  4. Mention the number of d-electrons in Fe^(+) (Z=26)

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  5. What is the magnetic momentum of aqueous solution of Ni^(2+) ?

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  6. Which ionic pair from the following is coloured in aqueous solution?

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  7. Which of the following descending order of second ionization enthalpy ...

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  8. Lanthenoid (Ln) is known for its +3 oxidation state. Which of the foll...

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  9. Which of the following ions is coloured in aqueous solution ?

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  10. Which of the following pair possess same volume?

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  11. The outer electronic configuration of Gd (Atomic no. 64) is…..

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  12. Iron exhibits (+2) and (+3) oxidation states. Which of the following s...

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  14. Four successive members of the first row transition elements are liste...

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  15. Consider the following reaction: zMnO(4)^(-) + yC(2)O(4)^(2-) + zH^(+)...

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  16. Which of the following arrangements doesnot represent the correct orde...

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  17. Sc (Z=21) is a transition elements but Zn(Z=30) is not because….

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  18. Identify the correct order of solubility in aqueous medium…..

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