Octet Exception

[Katherine Brenner 3H]

What elements are an exception to the octet rule?

[Adrianh72]

Main group elements in period 3 and downward, radicals, and elements in a molecule with an odd number of electrons can all break the octet rule.

[BNgo_2L]

Elements with expanded electron shells (with electrons more than s2p6), lewis acids and bases, Group 13 elements, and radicals (compounds with unpaired electrons) are all exceptions to the octet rule.

[Nick Fiorentino 1E]

The elements in period three and the subsequent periods along with the column 13 elements are exceptions to the octet rule

[AniP_2D]

Any element past Phosphorus (including P) are an exception to the octet rule and can hold more than 8 electrons.

[Joowon Seo 3A]

B and Al are also exceptions to this rule, as they must get 5 e- to get to an octet. However, since that is too many electrons they usually get 3 more e-