Chapter 8, Problem 8.26QP

Interpretation Introduction

Interpretation: Three examples of first-row transition metal (Sc to Cu) ions has to be given whose electron configurations are represented by the argon core.

Concept Introduction:

• The elements in a periodic table can be classified into different categories according to the type of subshell containing the valence electrons, namely representative elements, noble gases, transition metals the lanthanides, and the actinides.
• Transition elements contain either d subshell which are incomplete or that can form cations having incomplete d subshell.
• First-row transition metals consist of element from $Sc$ to $Cu$ and have outer electronic configurations of ${\text{3d}}^{\text{(1-10)}}{\text{4s}}^{\left(\text{1-2}\right)}$.