Which is not true about lanthanoids?

Chemistry D and F - Block Elements NCERT Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

All the lanthanoids are silvery white soft metals and tarnish rapidly in air.

All lanthanoids are highly dense metals.

Lanthanides are separated from one another by ion exchange methods.

The hardness decreases with increasing atomic number, samarium being steel hard.

Text Solution

Verified by Experts

The correct answer is:

All the lanthanides are silvery white metals, and hardness increases with increasing atomic number, samarium being steel hard.

Previous Question Next Question

Get practice questions, solutions, and test series in one place.

Share your experience with this question and solution.

Send your comment, doubt, correction, or feedback to admin.

What students say about this solution

No reviews yet. Be the first to write a review.