| ⇦ | 
| ⇨ |
The correct order of the decreasing ionic radii among the following isoelectronic species are :
Options
(a) Ca²⁺ > K⁺ > S²⁻ > Cl⁻
(b) Cl⁻ > S²⁻ >Ca²⁺ > K⁺
(c) S²⁻ > Cl⁻ >K⁺ >Ca²⁺
(d) K⁺ > Ca²⁺ > Cl⁻ > S²⁻
Correct Answer:
S²⁻ > Cl⁻ >K⁺ >Ca²⁺
Explanation:
Among the isoelectronic species, size increases with the increase in negative charge. Thus S has the highest negative charge and hence largest in size followed by Cl, K and Ca
Related Questions: - The physical adsorption of gases on the solid surface is due to
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- Which of the following is the green coloured powder produced when ammonium
- What is the mass of the precipitate formed when 50 mL of 16.9% solution of AgNO₃
- A corked flask containing boiling water and its vapour is allowed
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
- The physical adsorption of gases on the solid surface is due to
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- Which of the following is the green coloured powder produced when ammonium
- What is the mass of the precipitate formed when 50 mL of 16.9% solution of AgNO₃
- A corked flask containing boiling water and its vapour is allowed
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
Leave a Reply