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Why the elements of second row (first sh...

Why the elements of second row (first short period) show a number of differences in properties from other members of their respective families ?

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The differences in the properties of the first member of a group from those of the other members are due to
(i) The smaller size of the atom.
(ii) presence of one inner shell of only two electrons and
(iii) absence of d-orbitals
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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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