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Aluminium metal is frequently used as a ...

Aluminium metal is frequently used as a reducing agent for the extraction of metals like Cr,Mn,Fe etc. Explain.

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Aluminium has a great affinity for oxygen since it is a reduc ing agent. As aresult, if removes oxygen from the oxdies of less electropositive elements listed above and is. Therefore, used for their extraction.
`Cr_(2)O_(3)+2Alrarr@Cr+Al_(2)O_(3)`
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DINESH PUBLICATION-P BLOCK ELEMENTS (GROUP 13 AND 14 )-Concept based
  1. Anhydrous AlCl(3) is covalent but hydrated AlCl(3) is electrovalent. ...

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  2. Why no visible reaction occurs when aluminium is left in contact with ...

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  3. Aluminium metal is frequently used as a reducing agent for the extract...

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  4. Why B-X bond distance in BX(3) is shorter than theoretically expected ...

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  5. Aluminium is a highly electropositive metal but it find extensive use ...

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  6. Elemental silicon does not form a graphtie like structure. Explain.

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  7. C Cl(4) does not act a Lewis acid while SiCl(4) behaves as a Lewis aci...

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  8. Why is C Cl(4) used in fire extinguishers while CS(2) cannot be used?

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  9. Stannous chloride and ferric chloride cannot be kept in the same cont...

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  10. How is lithium aluminium hydride prepared? What is its important use?

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  11. What are methanides? Whichg as do they liberate on hydrolysis?

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  12. Why is+2oxidiation state of lead more stable than +4 oxidation state?

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  13. Diagonal Relationship Between Beryllium And Aluminium

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  14. White fumes appear around the bottle of anhydrous aluminium chloride. ...

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  15. Boron is unable to form BF(6)^(3-)– ion. Explain.

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  16. Why is boric acid considered as a weak acid ?

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  17. In elements of group 14. (a) which forms the most acidic oxide (b)...

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  18. [SiF(6)]^(2-) is a well known compound but [SiCl(6)[^(2-) is not. Expl...

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  19. Diamond is covalent, yet it has high melting point. Why ?

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  20. What are alums? Give the chemcial formulae of the following alums:

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