What is the Octet Rule of Electron Configuration?
Electron configuration is the arrangement of electrons in each energy level or shell of an atom.
- If the outer shell of an atom is not filled to its maximum level, the atom is still reactive and has a tendency to combine with other elements
- The atom only becomes stable when it is filled to the maximum level it can hold in the outer shell
- The octet rule is a rule of thumb that works most of the time with some exceptions
- For more information on valence electrons, please click here >>
Chlorine and fluorine fulfilling the octet rule
Fluorine has 7 valence electrons
Chlorine has 7 valence electrons
Chlorine and fluorine are bonded by sharing 1 electron each
Together they become a stable compound
Each atom now has 8 valence electrons (instead of 7) occupying its valence shell