Chapter 5.3, Problem 32SSC

Interpretation Introduction

Interpretation:

The Aufbau sequence through an element that has not yet been identified with completely fill $7p$ orbitals needs to be expanded. The number of electrons in the atom needs to be determined with its electron configuration using noble-gas notation for the previous noble gas, Radon.

Concept introduction: Aufbau sequence in which electrons in an atom are filled is represented as follows: $1s,2s,2p,3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5d,6p,7s,5f,6d,7p$

Answer to Problem 32SSC

Atom has $118$ electrons.

Electron configuration is $\left[Rn\right]7s²5f^{14}6d^{10}7p^6{}^{}$

Explanation of Solution

The known Aufbau sequence is as follows: $1s,2s,2p,3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5d,6p,7s,5f,6d,7p$

Radon has $86$ electrons and if there is further addition of $32$ electrons there will be $118$ electrons which the hypothetical element would have.

So, electron configuration is $\left[Rn\right]7s²5f^{14}6d^{10}7p^6{}^{}$

Conclusion

Thus, atom has c $118$ electrons.

Electron configuration is $\left[Rn\right]7s²5f^{14}6d^{10}7p^6{}^{}$