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Why B-F bond lengths in BF3 and BF^-4 di...

Why B-F bond lengths in `BF_3` and `BF^-_4` differ ?

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Suggest reasons why the B-F bond length in BF_3 (130 Pm) and BF_4^- (143 Pm) are different.

Suggest reasons why the B-F bond lengths in BF_3 (130 pm) and BF_4^(-) (143 pm) differ.

Why the bond length of BF_3 is less than that of BF_4 ? Find the hybridi, sation of Cl in CIO_4^+ .

Describe the shapes of BF_3 and BF_4^_

Comment on the shapes of BF_3 molecule and BF_4^(-) ion.

The bond angles in NH_(4)^(+) and CH_(4) are same but NH_(3) has different bond angle. Why ?

The B-F bond in BF_(3) is shorter in length that the B-F bond in BF_(4)^(-) - explainwith reasons.

B- F bond is polar but BF_3 does not have a dipole moment — why?

PATHFINDER-SOME P-BLOCK ELEMENTS-QUESTION BANK
  1. If the starting material for manufacture of silicones is RSiCl3 then w...

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  2. What is inorganic graphite? Why is it so called?

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  3. Why B-F bond lengths in BF3 and BF^-4 differ ?

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  4. PbCl2 is more stable than PbCl4 - Why?

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  5. Trisillylamine is a weaker base than trimethylamine-Why?

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  6. Out of CO and CO2 which acts as an ligand and why?

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  7. What do you mean by oil dag and aqua dag ? Write their uses.

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  8. What happens when (State with equation) At 200^@C under high pressur...

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  9. What happens when Silicon is heated with methyl chloride at high tempe...

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  10. Identify the compound A, X and Z in the following. A+2HCl+5H2O to 2N...

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  11. Identify the compound A, X and Z in the following.

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  12. Complete the following: ---+3LiAiH4 to ---+3LiF+3AiF3

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  13. Complete the following: ---+6H2O to---+6H2

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  14. Complete the following: ---+3O2 overset (triangle) to B2O3+3H2O

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  15. Describe the shapes of BF3 and BF4^

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  16. Is boric acid a protonic acid ? Explain.

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  17. What is importance of highly pure silicon? How can it be prepared?

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  18. Alkanes are large in number but Sillanes are comparatively few- Why?

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  19. What are silicates? Give one example each of orthosilicate and pyrosil...

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  20. What happens when (Give equation) Calcium carbonate is strongly heat...

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