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Giving reasons indicate which one of the...

Giving reasons indicate which one of the following would be coloured ?
`Cu^+ , V^(2+), Sc^(3+), Ni^(2+)` (At. no. of Cu = 29, V = 23, Sc = 21, Ni = 28)

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`Ni^(2+)` due to incompletely filled d-orbitals.
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PRADEEP-D- AND F-BLOCK ELEMENTS-CONCEPTUAL QUESTIONS
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  2. Why generally there is an increase in density of elements from titani...

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  9. Why are the ionisation energies of 5d elements greater than 3d element...

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  10. Describe giving reason which one of the following pairs has the proper...

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  11. Give reason for the following features of transition metal chemistry: ...

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  13. Give reasons for each of the following: (i) Size of trivalent lantha...

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  14. Assign reason for each of the following statement: (i) The largest n...

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  15. (i) Which is a stronger reducing agent Cr^(2+) or Fe^(2+) and why ? ...

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  16. Assign reasons for each of the following : (i) Manganese exhibits th...

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  17. Explain why Zn shown only +2 oxidation state.

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  18. Why is first ionization enthalpy of Cu higher than that of Na ?

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  19. Give reason for the following : (i) Mn shows the highest oxidation s...

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  20. (a) Following are the transition metal ions of 3d series: Ti^(4+),V^...

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