Which of the following ion is the largest in size?

Question

Which of the following ion is the largest in size? (A) K+ (B) Ca2+ (C) Cl- (D) S2-

Tardigrade Admin · Accepted Answer

Since all of these ions contain 18 electrons each, so these are isoelectronic. For isoelectronic ions, smaller the positive nuclear charge, greater is the size of the ion.

Q. Which of the following ion is the largest in size?

K⁺

Ca²⁺

Cl^-

S^2-

Since all of these ions contain 18 electrons each, so these are isoelectronic. For isoelectronic ions, smaller the positive nuclear charge, greater is the size of the ion.