hamburger

In which of the following pairs are the ions isoelectronic?

By BYJU'S Exam Prep

Updated on: October 17th, 2023

(I) Mg2+, Ar

(II) Na+, O2-

(III) Al3+, Cl-

(IV) K+, Ne

In pairs, Na+, O2- the ions are isoelectronic. When two ions or molecules share the same electronic structure and valence electron count, they are said to be isoelectronic.

Explain Isoelectronic Ions

If two or more molecules share the same structure and have an equal number of valence electrons, they are said to be isoelectronic.

  • Na+ ion’s electronic configuration is 2,8.
  • O- ion’s electronic configuration is 2,7.
  • O2- ion has an electrical configuration of 2,8.
  • They have therefore filled the K and L shells because they each have 10 electrons.
  • It isoelectronic for Sp, Na+, and O2.
  • This means that while the connectivity and atom count are the same, the elements may not be the same.

Summary:

In which of the following pairs are the ions isoelectronic? (I) Mg2+, Ar (II) Na+, O2- (III) Al3+, Cl- (IV) K+, Ne

Na+, O2- the ions are isoelectronic in given pairs. The molecules or ions which share the same electronic structure and valence electron count is called as isoelectronic.

Our Apps Playstore
POPULAR EXAMS
SSC and Bank
Other Exams
GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com
Home Practice Test Series Premium