Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 12

HARD

JEE Advanced

IMPORTANT

Earn 100

Explain the following

${BF}_{3}$ has no dipole moment, but ${PF}_{3}$ has a substantial dipole.

Important Questions on The Group 13 Elements

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 2

What is the main source of boron? Outline the steps in the extraction of boron.

EASY

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 3

Draw the structure of the

B_{12}

unit found in the solid structure of boron. What is this shape called?

MEDIUM

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 4

Work out the shape of the

{BO}_{3}^{3 -}

ion and explain why it has this structure.

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 12

Explain the following

${BF}_{3}$ and ${BrF}_{3}$ molecules have different shapes.

MEDIUM

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 17

Give two examples of alums. What species (ions) are present when these materials dissolve in water?

MEDIUM

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 19

How would you prepare

LiH

and

{LiAlH}_{4}

? What are they used for?

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 20

Give two different preparations for

{Et}_{3} Al

and describe its use as a catalyst for polymerizing

C_{2} H_{4} .

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 21

Compare and contrast the chemistry of boron and aluminium.