Basically all it is a nucleus splitting into smaller fragments and these fragments are almost equal to half of the original mass
Covalent solid, such as candle wax.
I believe a possible Lewis dot structure that does not obey the octet rule, where all elements are required to have 8 electrons in their outermost shell, would be the SF4 molecule.
Sulfur can contain an more than 8 electrons, in this molecule and thus has an expanded octet.
