Chapter 6.2, Problem 10SP

(a)

Interpretation Introduction

Interpretation:To list the symbols of all the elements that have given electronic configuration.

Concept introduction:

The electron configuration of an element defines how its electrons are arranged throughout its atomic orbitals. Standard notation is used to represent atomic electron configurations, placing all electron-containing atomic subshells in sequential order. The number of electrons held by the subshell is indicated by superscript.

Answer to Problem 10SP

  $\text{B, Al, Ga, In, Tl}$

Explanation of Solution

Given electronic configuration is,

  $n{s}^{2}n{p}^1$

The last electron in the p-subshell, so it is a p-block element. The outer shell or highest occupied energy level contains 3 electrons; thus, the given electron configuration is of group 3A. Elements of group 3A are boron, aluminum, gallium, indium, and thallium.

Thus, a list of symbols of elements having a given configuration is,

  $\text{B, Al, Ga, In, Tl}$

(b)

Interpretation Introduction

Interpretation:To list the symbols of all the elements that have given electronic configuration.

Concept introduction:

The electron configuration of an element defines how its electrons are arranged throughout its atomic orbitals. Standard notation is used to represent atomic electron configurations, placing all electron-containing atomic subshells in sequential order. The number of electrons held by the subshell is indicated by superscript.

Answer to Problem 10SP

  $\text{F, Cl, Br, I, At}$

Explanation of Solution

Given electronic configuration is,

  $n{s}^{2}n{p}^5$

The last electron in the p-subshell, so it is a p-block element. The outer shell or highest occupied energy level contains 7 electrons; thus, the given electron configuration is of group 7A. Elements of group 7A are fluorine, chlorine, bromine, iodine, and Astatine.

Thus, a list of symbols of elements having a given configuration is,

  $\text{F, Cl, Br, I, At}$

(c)

Interpretation Introduction

Interpretation:To list the symbols of all the elements that have given electronic configuration.

Concept introduction:

The electron configuration of an element defines how its electrons are arranged throughout its atomic orbitals. Standard notation is used to represent atomic electron configurations, placing all electron-containing atomic subshells in sequential order. The number of electrons held by the subshell is indicated by superscript.

Answer to Problem 10SP

  $\text{B, Al, Ga, In, Tl}$

Explanation of Solution

Given electronic configuration is,

  $n{s}^{2}n{p}^{6}n{d}^2\left(n+1\right)s^2$

The last electron is in d-subshell, so it is a d-block element. The d-subshell contains 2 electrons, so it belongs to the 4A group.

Thus, a list of symbols of elements having a given configuration is,

  $\text{Ti, Zr, Hf, Rf}$