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Describe the shapes of BF(3)" and "BH(4)...

Describe the shapes of `BF_(3)" and "BH_(4)^(-).` Assign the hybridisation of boron in these species.

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In `BF_3`, boron atom is in a state of `sp^2` hybridisation. Therefore, `BF_3` is a trigonal planar molecule. In `BH_4^-`, boron atom is in a state of `sp^3` hybridisation. Therefore, `BH_4^-` has tetrahedral geometry.
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ICSE-SOME P-BLOCK ELEMENTS -NCERT TEXTBOOK EXERCISES (With Hints and Solutions)
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  2. Explain what happens when boric acid is heated .

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  8. What is the state of hybridisation of carbon in (a) CO(3)^(2-) (b) dia...

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  13. Rationalise the given statements and give chemical reactions : • Lead(...

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  14. Suggest reasons why the B–F bond lengths in BF(3) (130 pm) and BF(4 )^...

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  15. If B–Cl bond has a dipole moment, explain why BCl(3) molecule has zer...

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  16. Aluminium trifluoride is insoluble in anhydrous HF but dissolves on ad...

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  18. How is excessive content of CO(2) responsible for global warming ?

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  19. Explain structures of diborane and boric acid.

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  20. What happens when Borax is heated strongly.

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