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In which of the following pairs, both th...

In which of the following pairs, both the ions are coloured in aqueous solution?

A

`Sc^3+`, `Ti^3+`

B

`Sc^3+` , `Co^2+`

C

`Ni^2+`, `Cu^+`

D

`Ni^2+`, `Ti^3+`

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SHARAM PUBLICATION-D AND F BLOCK ELEMENTS-EXERCISE
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  2. Permanent magnets are generaly made of alloys of :

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  3. In which of the following pairs, both the ions are coloured in aqueous...

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  4. The main reason for the large number of oxidation states exhibited by ...

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  5. Among the following out electronic configuration of atoms the highest ...

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  6. A reduction in atomic size with increase in atomic number is a charact...

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  7. The magnetic character of transition elements of its ion is due to

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  8. Which of the following transition metals show the maximum oxidation st...

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  9. Among the following series of transition metal ions the one where all ...

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  10. Which of the following d- block elements has half filled penultimate d...

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  11. The catalyst used for olefin polymerisation is

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  12. The malleability and ductility of metals can be accounted due to

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  13. Write down the electronic configuration of gadolinium (Gd). Its atom...

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  14. Which of the following ions is most stable in aqueous solution ?

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  15. For the four successive transition elements (Cr, Mn, Fe and Co), the s...

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  16. Write the electronic configuration Nickel.

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  17. Why are most of the transition metal compounds are paramagnetic ?

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  18. Which of the d - block elements are not regarded as transition element...

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  19. Why Fe^3+ is more stable than Fe^2+ ?

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  20. Why are scandium salts colourless ?

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