Discuss the structure of boron trihalides.

Important Questions on Some p-Block Elements

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Why do boron trihalides behave as Lewis acids? Discuss their relative acid strength.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Describe the shapes of ${\mathrm{BF}}_3$ and $\mathrm{B}{\mathrm{H}}_4{}^{-}$. What type of hybridization can we assign to boron in each of these compounds?

HARD

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Explain the following giving reason:
$\mathrm{B}{\mathrm{F}}_3$ acts as a Lewis acid.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Explain the following giving reason:
$\mathrm{B}{\mathrm{F}}_3$ is a weaker acid than $\mathrm{B}{\mathrm{Cl}}_3$.

HARD

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Arrange the boron trihalides in order of increasing Lewis acid character.

HARD

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Comment upon icosahedral structure of boron.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Why does boron differ from rest of the elements of group? Give at least three points of difference.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>ADDITIONAL QUESTIONS>Q I

Discuss briefly the action of heat on borax.