2, 8 is the electron configuration
Neon's long electron configuration is 1s2 2s2 2p6.
Oxide ion (O²⁻) has the electron configuration of a noble gas neon (Ne), which is 1s² 2s² 2p⁶.
Neon has the same electron configuration as the Fluoride ion however a spectrum of these although the same will be shifted in wave-length due to the additional charge on the Neon atoms nucelus.
Argon has the same electron configuration as N3. Both have 10 electrons with the electron configuration 1s2 2s2 2p6.
The lowest energy excited state electron configuration of O2 is 1s2 2s2 2p4. This configuration represents the two oxygen atoms in a triplet state where one electron is promoted from the 2p to the 2π* antibonding orbital.
Magnesium (Mg) with two valence electrons
The noble gas with atoms in the ground state having the same electron configuration as nitrogen in a molecule of isocyanic acid is Neon. Both nitrogen and neon have the electron configuration of 1s² 2s² 2p³ in their ground state.
Sodium has the electron configuration of neon.
If a sodium atom loses an electron to become a Na+ ion, its electron configuration will be the same as neon (1s22s22p6). Both sodium and neon have stable electron configurations.
When aluminum (Al, #13) reacts, it loses its three valence electrons to achieve the same electron configuration as neon (Ne, #10.) That configuration is 1s22s22p6. So yes, Al+3 has the same configuration as neon.
2, 8 is the electron configuration
Noble gases, like helium, neon, and argon, have no unpaired electrons in their ground state electron configuration. This means that all of their electrons are paired up in orbitals.
Magnesium will lose 2 electrons to have the same electron configuration as Neon. Neon has a full valence shell with 8 electrons, and Magnesium has 2 valence electrons. By losing 2 electrons, Magnesium can achieve a full valence shell and the same electron configuration as Neon.
A neutral sodium atom must lose one electron to have the electron configuration of neon, which has a stable electron configuration with a full outer shell. Sodium typically forms a +1 cation by losing this one electron to achieve a stable configuration like neon.
Neon's long electron configuration is 1s2 2s2 2p6.
The correct full electron configuration for neon (Ne) is 1s2 2s2 2p6.