Chapter 5.3, Problem 21PP

Interpretation Introduction

(a)

Interpretation:

The ground state electron configuration of the bromine (Br) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

Ground state electronic configuration of Br is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^5$.

Explanation of Solution

Ground-state electron configuration is the electrons' most stable arrangement with lower energy around the center of the atom. Atomic number of Br is 35. The ground state electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^5$ or $\left[Ar\right]4s^{2}3d^{10}4p^5$.

Interpretation Introduction

(b)

Interpretation:

The ground state electron configuration of the strontium (Sr) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

The ground state electronic configuration of Sr is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^2$.

Explanation of Solution

Ground-state electron configuration is the electrons' most stable arrangement with lower energy around the center of the atom. Atomic number of Br is 38. The ground state electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^2$ or $\left[Kr\right]5s^2$.

Interpretation Introduction

(c)

Interpretation:

The ground state electron configuration of the antimony (Sb) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

Ground state electronic configuration of Sb is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^3$.

Explanation of Solution

Ground-state electron configuration is the electrons' most stable arrangement with lower energy around the nucleus of the atom. Atomic number of Sb is 51. The ground state electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^3$ or $\left[Kr\right]4d^{10}5s^{2}5p^3$.

Interpretation Introduction

(d)

Interpretation:

The ground state electron configuration of the rhenium (Re) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

The ground state electronic configuration of Re is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^{14}5d^5$.

Explanation of Solution

The electrons' most stable, lowest-energy arrangement is named the ground-state electron configuration of the element. Atomic number of Re is 75. The ground state electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^{14}5d^5$ or $\left[Xe\right]4f^{14}5d^{5}6s^2$.

Interpretation Introduction

(e)

Interpretation:

The ground state electron configuration of the terbium (Tb) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

Ground state electronic configuration of Tb is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^9$.

Explanation of Solution

Ground-state electron configuration is the electrons' most stable arrangement with lower energy around the center of the atom. Atomic number of Tb is 65. The ground state electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^9$ or $\left[Xe\right]4f^{9}6s^2$.

Interpretation Introduction

(f)

Interpretation:

The ground state electron configuration of the titanium (Ti) is needs to be explained.

Concept introduction:

The electronic configuration shows the arrangement of atoms in the orbitals. The lower energy electronic configuration is more stable than higher energy electronic configuration.

Answer to Problem 21PP

Ground state electronic configuration of Ti is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^2$.

Explanation of Solution

Ground-state electron configuration is the electrons' most stable arrangement with lower energy around the center of the atom. Atomic number of Ti is 22. Electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^2$ or $\left[Ar\right]4s^{2}3d^2$.