Home Chemistry Classification of Elements and Periodicity Atomic and Ionic Radius Which of the following is the correct order …
Chemistry Classification of Elements and Periodicity Atomic and Ionic Radius Single Correct MCQ
Published on: August 13, 2026

Which of the following is the correct order of ionization enthalpy?

A
Te 2– < I – < Cs + < Ba 2+
B
I – < Te 2– < Cs + < Ba 2+
C
Te 2– < Cs + < I – < Ba 2+
D
Ba 2+ < Cs + < I – < Te 2–

Share this question

WhatsApp

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
A

All are isoelectronic species but as number of protons i.e. atomic number increases, the attraction between electron (to be removed) and nucleus increases and thus ionisation enthalpies increase. Order of Z : Te 2– (52) < I – (53) < Cs + (55) < Ba 2+ (56). So same will be the order of IE.

Previous Question Next Question

Prepare Smarter with CGP Edu

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

Write a Review

Share your experience with this question and solution.

Commentary

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

Student Reviews

What students say about this solution

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

Similar Questions

Explore conceptually related problems

The ratio between radii of ion and H atom is
The smallest among the following ions is
Which is smallest in size
Which of the following has largest size
Of the following, the one with largest size is
Which cation has smallest radius
CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.