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

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

admin:

Related Questions

  1. Carbolic acid is
  2. Galena is an ore of
  3. KMnO₄ acts as an oxidising agent in the netural medium and gets reduced to MnO₂.
  4. Which of the following statement is true for an electrochemical cell
  5. A mixture of two moles of carbon monoxide and one mole of oxygen