The notation "1s² 2s² 2p⁶" represents the electron configuration of an atom, specifically indicating how electrons are distributed in atomic orbitals. Each number and letter corresponds to a specific energy level and type of orbital, with "s" and "p" denoting the shape of the orbitals. The superscript numbers indicate the number of electrons in each orbital. This configuration is characteristic of the noble gas Neon, which has a total of 10 electrons. The filled orbitals contribute to the atom's stability, making Neon and other noble gases less reactive compared to other elements.