Home Chemistry Classification of Elements and Periodicity Ionisation Energy In the periodic table, the maximum chemical …
Chemistry Classification of Elements and Periodicity Ionisation Energy Single Correct MCQ
Published on: August 14, 2026

In the periodic table, the maximum chemical reactivity is at the extreme left (alkali metals) and extreme right (halogens). Which properties of these two groups are responsible for this?

A
Least ionization enthalpy on the left and highest negative electron gain enthalpy on the right.
B
Non – metallic character on the left and metallic character on the right.
C
High atomic radii on te left and small atomic radii on the right.
D
Highest electronegativeity on the left and least electronegativity on the right.

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

Elements on the left side have lowest ionisation enthalpy due to which they can very easily lose electrons while the elements on the right can accept electrons easily as they show highest negative electron gain enthalpy.

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 incorrect statement among the following is
The second ionisation potential of an element is the energy required to
The ionization energy of an element is
The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. …
The statement that is not correct for the periodic classification of elements is
In halogens, with the increase of atomic number which habit is found
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.