The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.

The Species Ark And Ca Contain The Same Number Of Chemistry Question

The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.In which order do their radii increase

Options

(a) Ca²⁺ < Ar < K⁺
(b) Ca²⁺ < K⁺ < Ar
(c) K⁺ < Ar < Ca²⁺
(d) Ar < K⁺ < Ca²⁺

Correct Answer:

Ca²⁺ < K⁺ < Ar

Explanation:

In isoelectronic species the radius decrease with increase in nuclear charge hence increasing order of radius is Ca⁺² < K⁺< Ar

Related Questions:

  1. Bakelite is prepered by the reaction between
  2. The number of unpaired electrons in 1s² 2s² 2p³ is
  3. Plaster of paris is used
  4. Which of the following does not participate in Solvey’s process for the formation
  5. Which of the following acts as both reducing and oxidising agent

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*