What do we by stable configuration?
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Stable configuration
They have two or eight electrons in their valence shell. They do not gain, lose or share electrons.
Explanation:
(a) Stable electronic configuration means an atom in which the outermost (valence) shell is complete. ... Valency is the number of electrons lost or gained from the outer shell of the atom.
A stable electron configuration for the representative or main group elements is a noble gas configuration. ... Atoms of the representative elements achieve a noble gas configuration by gaining or losing electrons and becoming ions, or by shar
Electron configurations can also predict stability. An atom is at its most stable (and therefore unreactive) when all its orbitals are full. The most stable configurations are the ones that have full energy levels. These configurations occur in the noble gases.
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable