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What do you mean by passivity of iron ?...

What do you mean by passivity of iron ?

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USHA PUBLICATION-D- AND F_BLOCK ELEMENT & CO-ORDINATION COMPOUND -EXERCISE
  1. What is the reason of paramagnetism in transition metals ?

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  2. A complex having molecular formula Cr(NH3)4CI2Br has two isomers 'A' a...

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  3. What do you mean by passivity of iron ?

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  4. Write two important alloys of copper and their uses.

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  5. Give two examples of alloy steel and their uses.

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  6. What do you mean by double salt and co- rodination compound ? Give one...

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  7. Write the name and composition of two iron ore.

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  8. Find the magnetic moment of Cr^(3+) ion.

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  9. What are transition metals ? Write their general outer electronic conf...

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  10. Explain, why Cu^+ ion is not stable in aqueous solution.

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  11. Explain why transition metal ions are usually coloured.

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  12. Explain, why [Ni(CN)4]^(2-) and [NiCl4]^(2-) have different geometry.

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  13. What is chelating ligand ?

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  14. What are t(2g) and eg orbitals ?

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  15. Explain the structure of CoCl3.4NH3 on the basis of Werner's theory.

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  16. Why do transition metals form complex salts?

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  17. Write the co-ordination number, and oxidation number of Fe in K4[Fe(CN...

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  18. Write IUPAC name of the compound [(C2H5)4Ni][ZnCl4]

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  19. Write IUPAC name of the compound [Co(en)2Cl(ONO)]^+

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  20. Write IUPAC name of the compound Na2[Fe(CN)5NO]

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