Chapter 9, Problem 57E

Interpretation Introduction

Interpretation:

The full electron configurations for each element are to be written and the valence electrons and core electrons are to be indicated.

Concept Introduction:

The illustration of the orbital occupation by electrons in an atom is known as electron

configuration.

The electrons which are present in the outermost principal energy shell are known as

valence electrons.

The electrons which are not in the outermost principal energy shell are known as core

electrons.