Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
A shorthand method for writing electron configurations using the symbol of the preceding noble gas in brackets followed by the remaining electrons (e.g., [Ar] 4s²).
AP course connection
Topic 1.5: 1.5 Atomic Structure and Electron Configuration