Exceptions?

[Lilia Hacoupian 2E]

What are all the elements that follow the octect rule? Are there more of those than exceptions or vice versa?

[Esmeralda Polanco]

The elements that generally follow the octet rule are those in the second period (Li to Ne) and the third period (Na to Ar), excluding the transition metals. There are some exceptions such as hydrogen and helium, which only require two electrons to achieve stability.

[marissa]

the exceptions to the octect rule are any of the atoms that have an empty d orbital to put extra electrons on. starting with the P, S, and Cl atoms. In addition, Be and Mg do not need a full octect, and B and Al usually only have 3 bonds, not a full octect.

[006248274]

Any element that is in period 3 of the periodic table, has the potential to have electrons in the D-block and thus expand their octet. The only atoms that can have only one octet are the ones that are in period 1 or 2. All the rest are exceptions to the octet.