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Boran forms a number of hydrides having ...

Boran forms a number of hydrides having the general formulae `BnH_(n+4)` and `BnH_(n+6)`. These are called boranes the simplest hydride of boran is diborane. Borane contains special types of bonds known as multicentric bonds. Borans have high heat of combustion.
From `B_(2)H_(6)`, all the following can be prepared, except

A

`H_(3)BO_(3)`

B

`B_(2)(CH_(3))_(4)H_(2)`

C

`B_(2)(CH_(3))_(6)`

D

`NaBH_(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`B_(2)(CH_(3))_(6)` because its methylation.
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Boran forms a number of hydrides having the general formulae BnH_(n+4) and BnH_(n+6) . These are called boranes the simplest hydride of boran is diborane. Borane contains special types of bonds known as multicentric bonds. Borans have high heat of combustion. Which hydrid doesnot exist.

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Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. Which of the following are diamagnetic ? 1) K_(4)[Fe(CN)_(6)] 2) K_(3)[Cr(CN)_(6)] 3) K_(3)[Co(CN)_(6)] 4) K_(2)[Ni(CN)_(4)]

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AAKASH SERIES-ELEMENTS OF BORON FAMILY-PRACTICE SHEET (EXERCISE - I) LEVEL - II (ADVANCED)
  1. Ortho boric acid and metaboric acid differ in respect of

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  2. Possible oxidation states of boron family elements are

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  3. Which among the following is acts as reducing agent ?

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  4. Which of the following statement is correct ?

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  5. Which of the following is basic in nature ?

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  6. Which of the following has lowest melting point ?

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  7. Which halides of element of group 13 exist as dimer in vapour state ?

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  8. Which of the following does not exhibit inert pair effect ?

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  9. The heavier members of 13 and 14 groups besides the group oxidation st...

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  10. The heavier members of 13 and 14 groups besides the group oxidation st...

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  11. The heavier members of 13 and 14 groups besides the group oxidation st...

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  12. Boran forms a number of hydrides having the general formulae BnH(n+4) ...

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  13. Boran forms a number of hydrides having the general formulae BnH(n+4) ...

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  14. Boran forms a number of hydrides having the general formulae BnH(n+4) ...

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  15. Boran forms a number of hydrides having the general formulae BnH(n+4) ...

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  16. {:(,"Column - I",,"Column - II"),((A),"Graphite",(P),"Layered structur...

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  17. How many moles of NO(2) are produced when mole of 'B' react with HNO(3...

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  18. How much nitrogen is evolved when one gm of NH(4)Cl is heated with bor...

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  19. Number of hexagonal rings in borax.

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  20. The number of hydrogen bonds that can be formed by each borax acid mol...

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