Chapter 5, Problem 102A

Interpretation Introduction

Interpretation:

The element corresponding to the ground state electronic configuration represented by the noble gas notation $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$ needs to be determined.

Concept introduction:

Electronic configuration of an element explains how the electrons are distributed in their atomic orbitals. Electronic configurations of the atoms are written in such a way that the atomic sub-shells containing electrons are placed in a sequence and the number of electrons present in them is written in the superscript.

Answer to Problem 102A

Francium is the element with the ground state electronic configuration of $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$.

Explanation of Solution

The ground state electronic configuration is $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$ in which the symbol in the bracket represents the noble or inert gas. The noble gas represented in the given electronic configuration is radon having 86 total electrons. The total number of electrons represented by the given electronic configuration $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$ is 87. The total number of electrons in a neutral atom represents the atomic number of that element. Therefore, the element with atomic number 87 is francium. Hence, francium is the element with the ground state electronic configuration of $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$.

Conclusion

Francium is the element with the ground state electronic configuration of $\left[\text{Rn}\right]{\text{7s}}^{\text{1}}$.