What term describes the arrangement of electrons that resembles the electron configuration of lower-level atoms?

The term that best describes the arrangement of electrons that resembles the electron configuration of lower-level atoms is "electron arrangement." This term specifically refers to how electrons are distributed among various atomic orbitals and energy levels, reflecting the specific configuration that stabilizes the atom, akin to that of noble gases or simpler atoms.

In this context, the concept highlights the importance of having a stable electron configuration, which usually follows the principles of electron filling and the octave rule. Atoms tend to seek a filled outer shell, similar to the electron configurations of lower-level or noble gas atoms, leading to lower reactivity.

Orbital configuration, while related, specifically addresses the distribution of electrons in orbitals without emphasizing how closely this distribution reflects that of lower-level atoms. Sublevel structure focuses on the divisions within principal energy levels rather than the overall arrangement. Atomic structure is a broader term that encompasses the entire arrangement of protons, neutrons, and electrons without specifically addressing the electron distribution that mirrors simpler configurations.