Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Lecture VI: Lanthanides Complexes in Organic Chemistry

10 Questions

3 Views

Lecture VI: Lanthanides Complexes in Organic Chemistry

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of orbitals are implied to participate in bonding when the coordination number is 10 or 12?

d-orbitals

f-orbitals (correct)

s-orbitals

p-orbitals

Why does the tendency to hydrolysis increase with increasing atomic number for the Ce3+ ion?

Due to the decrease in charge density

Due to the expansion in radii

Due to the increase in ionic radius

Due to the contraction in radii (correct)

What property of lanthanide ions +3 favors the formation of complexes?

Low charge density

Small ionic radius

Preference for covalent bonding

High charge density (correct)

What happens to the M3+ aqua ions according to the hydrolysis equation?

They lose OH- ions Signup and view all the answers

What is the role of CAN (ceric ammonium nitrate) in organic chemistry?

Catalyst for oxidation reactions Signup and view all the answers

Why do the lanthanides form few complexes, mostly with oxygen ligands?

The unavailability of the f-orbital to form hybrid orbitals which leads to covalent bond strength. Signup and view all the answers

What is the typical coordination number of lanthanides in aqua complexes?

6 Signup and view all the answers

Why do lanthanides have little or no tendency to form complexes with π –bonding ligands?

The large size of the lanthanide elements compared to the transition elements. Signup and view all the answers

What limits the maximum coordination number of lanthanides to 9?

Use of one s orbital, three p orbitals, and all five d orbitals in the valence shell for bonding. Signup and view all the answers

Why is it difficult to explain the bonding in complexes with high coordination numbers?

The involvement of multiple types of atomic orbitals in bonding. Signup and view all the answers