Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their outermost (valence) electron shell, achieving the same electron configuration as a noble gas.
This is when one atom donates one or more electrons to another atom to achieve stable octets. It's like giving your friend the last piece of cake so you both can be happy.
Stable Electron Configuration: This refers to an atom having its outermost energy level completely filled with electrons. Imagine filling up a water bottle - it's most stable and 'complete' when it's full.
These are elements with naturally occurring stable octets. They're like people who are naturally balanced and content - they don't need anything else to be happy!