Boron forms a number of hydrides having general formulae `B_(n)H_(n+4)` and `B_(n)H_(n+6)`. These hydrides called boranes. The simplest hydride of boron is diborane. Boranes contains special types of bonds known as multi centre bonds. Boranes have high heat of combustion Diborane liberates `H_(2)` gas when it is treated withA. `HCl` in the presence of anhydrous `AlCl_(3)`B. `H_(2)O`C. `KOH_(aq)`D. All are correct

Boron forms a number of hydrides having general formulae `B_(n)H_(n+4)

1.	Boron forms a number of hydrides having general formulae `B_(n)H_(n+4)` and `B_(n)H_(n+6)`. These hydrides called boranes. The simplest hydride of boron is diborane. Boranes contains special types of bonds known as multi centre bonds. Boranes have high heat of combustion Diborane liberates `H_(2)` gas when it is treated withA. `HCl` in the presence of anhydrous `AlCl_(3)`B. `H_(2)O`C. `KOH_(aq)`D. All are correct
Answer» Correct Answer - D

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`H_(3)BO_(3)` dissolves in liquid HF due to formation of compound X. The hybridisation of central atom in compound X is ,A. `sp^(3)`B. `sp^(2)`C. `sp` & `sp`D. `sp^(3)d`
The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in `[B(OH_(4))]^(-)` and the geometry of the complex are respectively.A. `sp^(3)`, tetrahedralB. `sp^(3)`,squre plannarC. `sp^(3)`d^(2),octahedralD. `dsp^(2)`,square planar
Some statements about the structur of diborane are given below . NMR and RAMAN spectral studies have confirmed that four hydroens of diborance are one tuype and remaing two are of another type B) Electron diffraction studies have shown that diborance contains two copanar `BH_(2)` groupsc) Diborane is a planar molecule D) Boron of dibrane ujndergoes `sp^(2)` hybridisation . the correct statement areA. Only A and BB. Only A,B,CC. Only B,C,DD. All are correct
In diborane, the two `H-B-H` angles are nearlyA. `60^(@),120^(@)`B. `97^(@),120^(@)`C. `95^(@),150^(@)`D. `120^(@),180^(@)`
In the structure of diboraneA. All hydrogen atoms lie in one plane and boron atoms lie in a plane perpenduicular to this planeB. 2 boron atoms and 4 terminal hydrogen atoms lie in the same plane and 2 bridging hydrogen atoms lie in the perpendicular planeC. 4 bridging hydrogen atoms and boron atoms lie in one plane and two terminal hydrogen atoms lie in a plane perpendicular to this planeD. All the atoms are in the same plane
The types of hybridisation of boron in diborane isA. spB. `sp^(2)`C. `sp^(3)`D. `sp^(3)d`
Which of the following combinations is not suitable for the preparation of DiboraneA. `NaBH_(4)` & `I_(2)`B. `Ca(OH)_(2)` & `BCl_(3)`C. `BCl_(3)` & `H_(2)`D. `BF_(3) + LiH`
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Aluminium chlorde exists as dimer, `Al_(2)Cl_(6)` in solid state as well as in solutin of non-polar solvents such as benzene. When dissolved in waer it gives :A. `Al^(3+) + 3Cl^(-)`B. `[Al(H_(2)O)_(6)]^(3+) + 3Cl^(-)`C. `[Al(H_(2)O)_(6)]^(3+) + 3HCl`D. `Al_(2)O_(3) + 6HCl`
`TI_(3)` is an ionic compound which furnishesA. `Tl^(+)` & `I_(3)^(-)` ionsB. `Tl^(3+)` & `I_(3)^(-)` ionsC. `Tl^(3+)` & `I^(-)` ionsD. `Tl^(+)` & `I^(-)` ions

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