HARD
JEE Advanced
IMPORTANT
Earn 100

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

Important Questions on The Group 13 Elements

EASY
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 3
Draw the structure of the B12 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 BO33- ion and explain why it has this structure.
HARD
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 5
Orthoboric acid may be written as H3BO3 or B(OH)3. How does it ionize in water and which way of writing the formula is the most helpful? How strong an acid is it? Why does glycerol enhance its acidic properties? Write a balanced equation for a neutralization reaction with boric acid.
HARD
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 6
Give an account of isopoly-acids with special reference to borates.
HARD
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 7
Give one method for the preparation of diborane, B2H6. Why is it called an electron-deficient compound? Draw the structure of diborane and give the bond lengths. What is unusual about the bonding in this compound?
HARD
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8
How does diborane react with ammonia?
MEDIUM
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8
How does diborane react with boron tribromide?
EASY
JEE Advanced
IMPORTANT
Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8
How does diborane react with trimethyl borane?