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Write the characteristics of interstitia...

Write the characteristics of interstitial compounds.

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Characteristics of interstitial compounds :
`rarr` These are non stoichiometric and are neither typically ionic nor covalent.
`rarr` They have high melting points, higher than of pure metals.
`rarr` They are very hard, some borides approach diamond in hardness.
`rarr` They retain metallic conductivity.
`rarr` They are chemically inert.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-D AND F- BLOCK ELEMENTS AND CO-ORDINATION COMPOUNDS -SHORT ANSWER QUESTIONS
  1. Explain the catalytic action of Iron(III) in the reaction between I an...

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  2. What are interstitial compounds ? How are they formed ? Give two examp...

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  3. Write the characteristics of interstitial compounds.

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  4. Wtite the characteristic properties of transition elements.

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  5. Write down the electronic configuration of Cr^(3+)

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  6. Write down the electronic configuration of Cu^(+)

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  7. Write down the electronic configuration of Co^(2+)

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  8. Write down the electronic configuration of Mn^(2+)

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  9. What may be the stable oxidation state of the transition element with ...

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  10. What is lanthanoid contraction ? What are the consequences of lanthano...

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  11. How is the variability in oxidation states of transition metals differ...

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  12. Describe the preparation of potassium dichromate from iron chromite or...

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  13. Describe the oxidising action of potassium dichromate and write the io...

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  14. Describe the preparation of potassium permanganate.

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  15. How does the acidified permanganate solution react with iron (II) io...

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  16. How does the acidified permanganate solution react with SO(2) Writ...

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  17. How does the acidified permanganate solution react with oxalic acid....

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  18. Predict which of he ions Cu^(+), Sc^(3+), Mn^(2+), Fe^(2+) are coloure...

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  19. Compare the stability of + 2 oxidation state of the elements of the fi...

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  20. Use Hund's rule to derive the electronic configuration of Ce^(3+) ion ...

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