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What happens when a borax solution is ac...

What happens when a borax solution is acidified ? Write a balanced equation for the reaction.

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`Na_2 B_4 O_7 + 2HCl + 5 H_2 O to 2NaCl + 4H_3 BO_3`
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ICSE-SOME P-BLOCK ELEMENTS -SHORT ANSWER TYPE QUESTIONS
  1. What is the role of CO2 in the synthesis of carbohydrates in plants?

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  2. Why are boron halides and diborane referred to as 'electron deficient ...

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  3. What happens when a borax solution is acidified ? Write a balanced equ...

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  4. Why do boron halides form addition compounds with ammonia ?

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  5. With the help of a balanced chemical equation, show that B(OH)3 behave...

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  6. Write the resonance structures of CO(3)^(2-)" and "HCO(3)^(-).

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  8. Write the names and electronic configuration of all the elements belon...

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  9. Why is the atomic radius of gallium smaller than that of aluminium?

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  10. How do the Density property vary on moving down the group 13?

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  11. How do the Melting and boiling points property vary on moving down the...

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  12. How do the Metallic character property vary on moving down the group 1...

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  13. Why are the second and third ionisation energies of group 13 elements ...

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  14. What is inert-pair effect? Illustrate with an example.

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  15. Why does the stability of + 3 oxidation state decrease on moving down ...

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  16. Atomic size increases down a group of the periodic table. Explain.

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  17. Why does gallium have higher ionisation energy than aluminium?

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  18. Boron does not form ionic compounds containing B^(2+) ions. Comment on...

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  19. In the structure of diborane,

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  20. Why do boron halides act as Lewis acids ?

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