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Which of the following has d^(1) configu...

Which of the following has `d^(1)` configuration and is stable ?

A

Cr `( +5)`

B

Mn `( +6)`

C

both (1) and (2)

D

V `( +4)`

Text Solution

Verified by Experts

The correct Answer is:
D
Except `V(+4)`, all other with this configuration are either reducing or undergo disproportionation. For example, disproportionation occurs for `Cr(+5)` and `Mn(+6)` as follows:
`3 CrO_(4)^(3-) + 8H^(+) rarr 2 CrO_(4)^(2-) + Cr^(3+) + 4H_(2)O`
`3MnO_(4)^(2-) + 4H^(+) rarr MnO_(2) + 2H_(2)O`
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R SHARMA-THE D AND F BLOCK ELEMENTS-Follow-up Test 2
  1. Which of the following has the highest melting point in the first row ...

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  2. Which of the following has the lowest enthalpy of atomisation ?

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  3. Which of the following d-block metals has the highest boiling point ?

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  4. Which of the folling d-block metals has the highest density ?

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  5. Atoms of d-block elements in a given period are smaller than those of ...

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  6. Which of the following statement is correct ?

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  7. Which of the following d-block elements has the bigger covalent radius...

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  8. Which of the following statement is correct regarding 3d-series of ele...

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  9. Which of the d-block elements has the lowest electronegativity ?

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  10. The noble charactoer of platinum and gold is favoured by

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  11. Which of the following is correct for d-block metals ?

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  12. The d-block elements exhibit variable oxidation states. The serveral d...

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  13. Which of the following transition elements does not exhibit variable o...

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  14. Which of the 3d-seres of the transition metals exhibits the leagest nu...

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  15. Which of the following has d^(1) configuration and is stable ?

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  16. Which of the following has d^(3) configuration and is quite stable ?

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  17. Which of the following species with d^(6) configuration is stable in ...

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  18. Which of the following is the strongest oxidizing agent ?

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  19. Which of the following couples has the most positive E^(Theta) value ?

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  20. Which of the following statements is correct ? (1) The highst oxidat...

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