Which of the given species is isoelectronic with each other has to be grouped. Concept Introduction: Isoelectronic species: two ions or an atom and an ion have same electronic structure and same number of valence electrons Electronic configuration is the arrangement of the electrons of atoms in the orbital. For atoms and ions the electronic configuration are written by using Pauli Exclusion Principle and Hund’s rule . According to Pauli Exclusion Principle , no two electrons having the same spin can occupy the same orbital. According to Hund’s rule , the orbital in the subshell is filled singly by one electron before the same orbital is doubly filled. When the orbitals are singly filled, all the electrons have same spin. In a doubly filled orbital, there are two electrons with opposite spin. No two atoms can be isoelectronic with each other.

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Chapter 8, Problem 8.32QP

Interpretation Introduction

Interpretation:

Which of the given species is isoelectronic with each other has to be grouped.

Concept Introduction:

Isoelectronic species: two ions or an atom and an ion have same electronic structure and same number of valence electrons

Electronic configuration is the arrangement of the electrons of atoms in the orbital. For atoms and ions the electronic configuration are written by using Pauli Exclusion Principle and Hund’s rule.

According to Pauli Exclusion Principle, no two electrons having the same spin can occupy the same orbital.

According to Hund’s rule, the orbital in the subshell is filled singly by one electron before the same orbital is doubly filled. When the orbitals are singly filled, all the electrons have same spin. In a doubly filled orbital, there are two electrons with opposite spin.

No two atoms can be isoelectronic with each other.

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