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Which element of group 13 forms the most...

Which element of group `13` forms the most stable `+1` oxidation state.

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Inert pair effect is most prominent in case of Tl and hence it forms the most stable +1 oxidation state.
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Answer the following : (a) Name of element of group 13 which forms the most stable compound in +1 oxidation state. (b) Name the element of group 13 which has the highest first ionisation enthalpy. ( c) Name the element of group 13 which is used as a reducing agent in metallurgical processes. (d) Name of element of group 13 which can show convalency maximum of four only. Name the compound of aluminium which is used as a germicide and coagulant of the purification of water. (f) Name the first two elements of group 13 .

The most stable oxidation state of copper is

The most stable oxidation state of boron is

Most stable oxidation state of iron is

Most stable oxidation state of gold is:

PRADEEP-SOME p-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS) I. Group 13 Elements
  1. INERT PAIR EFFECT

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  2. Why the elements of second row (first short period) show a number of d...

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  3. Which element of group 13 forms the most stable +1 oxidation state.

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  4. Name the element of group 13 which forms only covalent compounds.

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  5. Why boron compounds such as BF(3) are called electron deficient compo...

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  6. Why boron trihalides act as Lewis acids ?

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  7. BCl(3) behaves as a Lewis acid Give reason.

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  8. How does electron deficient compound BF(3) achieve electron saturation...

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  9. Why do boron halides form addition compounds with amines ?

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  10. Why BF(3) forms as an adduct with ammonia ?

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  11. Which element of group 13 forms amphotric hydroxide ?

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  12. How does BF(3) act as a catalyst in industrial process?

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  13. Draw the structure of Al(2)Cl(6).

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  14. What is the correct strctural formula of borax (Na(2)B(4)O(7).10H(2)O)

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  15. What happens when : (i) Carbon dioxide is passed through an aqueous...

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  16. What happens when a borax solution is acidfied ? Write a balanced equa...

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  17. With the help of a balanced chemical equation show how B(OH)(3) behave...

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  18. What happens when boric acid is heated?

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  19. What are boranes?

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  20. How is diborane prepared ?

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