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Why are all salts of scandium white ?...

Why are all salts of scandium white ?

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In these salts, scandium exists as `Sc^(3+)` ion which is iso-electronic with `[Ar]^(18)`. With completely filled orbitals, the salts of `Sc^(3+)` are white.
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DINESH PUBLICATION-D-AND -F BLOCK ELEMENTS-Question From Board Examination
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  2. Why is third ionisation enthalpy of manganese exceptionally high ?

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  3. Why are all salts of scandium white ?

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  4. What happens when H(2)O(2) is shaken with acidified K(2)Cr(2)O(7) solu...

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  5. H(2)S gas is passed through an acidic solution of K(2)Cr(2)O(7) . The ...

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  6. How is chemical volcano formed ?

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  8. Complete the following reactions : (i) Cr(2)O(7)^(2-)+Sn^(2+)+H^(+) ...

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  9. Explain why Zn^(2+) salts are colourless while Ni^(2+) salts are colou...

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  10. The colour of K(2)Cr(2)O(7) solution changes with the change in pH of ...

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  11. Why is +2 oxidation state of manganese quite stable while the same is ...

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  12. Write the electronic configuration of the element with atomic number 1...

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  13. Which out of the two ,La(OH)(3) and Lu(OH)(3), is more basic and why?

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  14. Why are Zn, Cd and Hg quite soft and have low melting points ?

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  15. Lanthanoid contraction is caused due to:

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  16. What may the possible oxidation state of transition metals with the fo...

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  17. Discuss the relative stability in aqueous solution of +2 oxidation sta...

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  18. How many unpaired electrons are present in Mn^(2+) ion ? How do they i...

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  19. Complete the following chemical equations for reactions in aqueous sol...

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