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Name the element of group 13 which forms...

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

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Because of small size and high sum of first three ionization enthalpies `(Delta_(i)H_(1) + Delta_(i)H_(2) + Delta_(i)H_(3))`, B forms only covalent compounds.
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Name the element of group 13 which only forms covalent compounds.

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Name the elements of group 13 which form amphoteric hydroxides.

Boron form covalent compound due to

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 .

Name the group 13 element which forms most stable compounds in +1 oxidation state.

PRADEEP-SOME p-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS) I. Group 13 Elements
  1. Why the elements of second row (first short period) show a number of d...

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

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

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

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  5. Why boron trihalides act as Lewis acids ?

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

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

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

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

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  10. Which element of group 13 forms amphotric hydroxide ?

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

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

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

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

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

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

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  17. What happens when boric acid is heated?

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  18. What are boranes?

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  19. How is diborane prepared ?

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  20. How does NaBH(4) react with iodine ?

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