Na⁺, Mg²⁺, Al³⁺ and Si⁴⁺ are isoelectronic. The order of their ionic size is

⇦

⇨

Na⁺, Mg²⁺, Al³⁺ and Si⁴⁺ are isoelectronic. The order of their ionic size is

Options

(a) Na⁺>Mg²⁺< Al³⁺ (b) Na⁺Al³⁺>Si⁴⁺
(c) Na⁺>Mg²⁺>Al³⁺> Si⁴⁺
(d) Na⁺ Al³⁺

Correct Answer:

Na⁺>Mg²⁺>Al³⁺> Si⁴⁺

Explanation:

Amongst isoelectronic ions, thesize of thecation decreases as the magnitude of thecharge increases

Related Questions:

1. Which one of the following is wrong about molecularity of a reaction
2. Carbogen is
3. At 298 K the enthalpy of formation of liquid water is -285.9 kJ/mol
4. In the gas phase reaction C₂H₂ + H₂ ⇌ C₂H₆, the equilibrium constant
5. A 2.5 mol sample of N₂H₄ loses 25 mol of electrons in being converted

Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends