Sodium in all its compounds forms the Na+ ion.
Its electron configuration is the same as of noble gas Ne:
(Na+) = (1s2, 2s2 2p6, 3s0)
Na2+ would have the following electron configuration: 1s2, 2s2 2p5
This is not a noble gas configuration and requires a lot of energy to remove the 2nd electron out off the 2px orbital just after the 1st removal from its 3s orbital. It only is observed for example as a transient species when sodium vapour is irradiated with strong laser light.
The electronic configuration for the sodium ion, Na+ is 1s2 2s2 2p6 or [Ne]
The ion formed when sodium achieves a noble-gas electronic configuration is Na+. This means that sodium has lost one electron to achieve the same electron configuration as neon, a noble gas, which has a stable electron configuration.
The electron configuration for neutral Barium is [Xe] 6s2. Barium plus 2 means it has lost 2 electrons, so the electron configuration for Barium plus 2 would be [Xe].
The Fe2 plus electron configuration is 1s2 2s2 2p6 3s2 3p6 3d6.
Let us assume that we have Sodium (Na), it has the ground state electron configuration of: [Ne]3S1. The ANION is negative, and thereby has more electrons, the Na anion(Na.) would have the following electron configuration: [Ne]3S2. The CATION(which is a positive ion) of Na(Na+) would have [Ne] as it electron configuration(as it loses an electron and becomes "equal" to Neon)
neon
Na+ is the formula of the ion formed when sodium achieves a stable electron configuration.
In NaCl, there exists Na+ and Cl- ions and with the electron configuration of [He]2s22p6 (for Na+) and [Ne]3s23p6 (for Cl-)
The electronic configuration for the sodium ion, Na+ is 1s2 2s2 2p6 or [Ne]
The ion formed when sodium achieves a noble-gas electronic configuration is Na+. This means that sodium has lost one electron to achieve the same electron configuration as neon, a noble gas, which has a stable electron configuration.
The noble gas electron configuration of sodium fluoride is [Ne]3s^1 3p^5. This means that it has the same electron configuration as neon, with an additional 3s^1 electron from sodium and a 3p^5 electron from fluorine.
Cobalt electron configuration is [Ar]3d7.4s2.Cobalt(2+) electron configuration is [Ar]3d7.
The electron configuration for neutral Barium is [Xe] 6s2. Barium plus 2 means it has lost 2 electrons, so the electron configuration for Barium plus 2 would be [Xe].
There are four electrons in a Beryllium atom. Hence the mono positive ion has only three electrons. Therefore the electron configuration is 1s2 2s1.
The electron configuration for a magnesium cation Mg2 plus is 1s2.2s2.2p6.
Argon has the same electron configuration as a sodium ion. Sodium ion has lost 1 electron from its outer shell, making its electronic configuration 2, 8. Argon's electronic configuration is also 2, 8 in its outer shell.
Both lithium (Li) and sodium (Na) have one electron in their outermost energy level, giving them similar electronic configurations. They both have an electron configuration of [Ne] 3s¹, where [Ne] represents the electron configuration of the noble gas neon.