Chapter 11, Problem 40E

Interpretation Introduction

(a)

Interpretation:

The group and period for the element with the electron configuration $1s^{2}2s^{2}2p^{6}3s^{2}4s^{2}3d^8$ are to be identified.

Concept introduction:

Many of the chemical properties of an atom or ion depend on its electron configuration. The electron configuration refers to the ground state distribution of electrons among the orbitals of the species. In the electron configuration the highest occupied energy level indicates the period and the numbers of valence electrons indicate the groups.

Interpretation Introduction

(b)

The group and period for the element with the electron configuration $1s^{2}2s^{2}2p^{6}3s^2$ are to be identified.

Concept introduction:

Many of the chemical properties of an atom or ion depend on its electron configuration. The electron configuration refers to the ground state distribution of electrons among the orbitals of the species. In the electron configuration the highest occupied energy level indicates the period and the numbers of valence electrons indicate the groups.