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Which of the transition metal forms gree...

Which of the transition metal forms green compound in its +3 oxidation state and yellow to orange compound in +6 oxidation state?

A

Cr

B

Co

C

Fe

D

Ni

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R G PUBLICATION-THE d-AND f-BLOCK ELEMENTS-EXERCISE
  1. Which has the largest radius?

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  2. Transition metel compounds are generally coloured. Why?

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  3. Which of the transition metal forms green compound in its +3 oxidation...

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  4. In Waker process the catalys used is

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  5. The similar properties of Hf & Zr is due to:

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  6. The formation of M^(2+) ion from transition metal 'M' is governed by :

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  7. The E^@(M^(2+)//M) value for copper is positive because:

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  8. Which of the following undergo disproporationation in aquous solution?

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  9. The emitted colour of Ti^(4+) ion is

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  10. Which of the following metal does not form MO type oxide?

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  11. In the dichromate dianion

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  12. What are transition elements? Give the general electronic configuratio...

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  13. What are transition elements? Give the general electronic configuratio...

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  14. Give reasons: Why are Zn, Cd, and Hg normally not regarded as transiti...

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  15. Silver atom has complete filled d-orbitals (4d^(10)) in its ground sta...

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  16. Why third ionisation enthalpy of Mn is very high?

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  17. The variability of oxidation states of a transition element is differe...

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  18. Flourine is more electronegative than oxygen. Oxygen foms compound Mn2...

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  19. Between the couple Cr^(3+)//Cr^(2+) and Fe^(3+)//Fe^(2+) whose E value...

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  20. Give the reason for negative E^@ value for Ni^(2+)//Ni.

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