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INERT PAIR EFFECT...

INERT PAIR EFFECT

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In the elements of 4th, 5th, and 6th period of the p-block elements which come after d-block elements, the electrons present in the intervening d- and f-orbitals do not shield the s-electron of the valence shell effecitively.
As a result, `ns^(2)`-electrons remains more tightly held by the nucleus and hence do not participate in bonding. This is called inert pair effect.
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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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