Build your practice set

Find exactly what you need to practice.

Search across chemistry topics, concepts, chapters, and questions.

Viewing Shared Question View All Feed

Periodic Table Isoelectronic Species and Ionic Radius

1

Choose the best answer

O²⁻, F⁻, Na⁺ and Mg²⁺ are isoelectronic. Their radii decrease in the order:

Verified Answer & Explanation⌄

Correct Answer: B) O²⁻ > F⁻ > Na⁺ > Mg²⁺

Concept Explanation

All have 10 electrons; as nuclear charge increases from O²⁻ to Mg²⁺, the same electron cloud is attracted more strongly and the ionic radius decreases.

Topic: Isoelectronic Species and Ionic RadiusPractice more Isoelectronic Species and Ionic Radius MCQs →