Chapter 5.3, Problem 25PP

Interpretation Introduction

Interpretation:

The electronic configuration of the given element and its name needs to be determined if the ground state of the element has 2 electrons in all orbitals and the highest energy level is n=6.

Concept introduction:

The electronic configuration of an element shows the arrangement of electrons in the atomic orbitals.

Answer to Problem 25PP

The electronic configuration of element is $\left[Xe\right]6s^{2}4f{1}^{4}5d^{10}6p^6$

The name of element is Radon.

Explanation of Solution

Given: $n=6$

Explanations:

To identify the element and its electron configuration it’s necessary to specify two criteria:

• The highest energy level is $6$
• All the orbitals related to atom's highest energy level $(n=6)$ have two electrons in each of them.

By following the Aufbau sequence, write the ground state electron configuration and fill all subshells with electrons until it come to a subshell that is greater in energy than $6$ i.e. $7s$ sub-shell.

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^{14}5d^{10}6p^6{}^{}$

Substitute this with electron configuration of Xenon

$\left[Xe\right]6s^{2}4f^1{}^{4}5d^{10}6p^6$

Atomic number of Xenon is 54.

By adding the remaining 32 electrons it becomes 86 which corresponds to Radon.

Thus, the electronic configuration of element is $\left[Xe\right]6s^{2}4f^1{}^{4}5d^{10}6p^6$

The name of element is Radon.

Conclusion

The electronic configuration of element is $\left[Xe\right]6s^{2}4f^1{}^{4}5d^{10}6p^6$

The name of element is Radon.