Radon:...... 6p6
Xenon:.......5p6
Krypton:.....4p6
Argon:........3p6
Neon:.........2p6
[noble gas]ns2 np6
By acquiring noble gas configuration elements become stable .
[Ne]3s23p4
it only fills the S sublevel
The stable ions of all the elements except the Transition metals, Actinide, and Lanthanide series (that is the d and f block elements) form stable ions that are isoelectronic to a nobel gas by gaining or losing electrons in order to achieve an s2 p6 stable octet. For example, sodium will lose one electron to have the same electron configuration as neon, while nitrogen will gain three electrons to become isoelectronic to neon.
Noble gases have a stable electron configuration. So they are less reactive.
The group attains electron configuration of noble gases by gaining one electron is the halogens. They have seven valence electrons and need one more electron to complete their outer shell, resulting in a full valence shell like the noble gases.
All of the noble gasses have full outer electron shells - rendering them extremely nonreactive. Their electron configuration is what places them in the group on the periodic table that we have designated "noble gases".
The group of elements that have a stable electron configuration are the noble gases.
Noble gases have a full outer electron shell, which makes them stable because they have achieved a balanced and low-energy state.
Calcium loses two electrons to obtain a noble-gas electron configuration.
The short hand configuration is also called noble gas configuration because it mimics the electron configuration of noble gases, which are chemically stable and have full valence shells. By using noble gas configurations, we can easily represent the electron arrangement of elements without writing out the entire electron configuration.