Octet exception examples

[Jina Kwon]

What are the octet exception examples that we usually need to know on tests?

[William Francis 2E]

The lecture slides listed H, He, Li, and Be as exceptions to the octet rule. However, I think that Dr. Lavelle said that we'd discuss more exceptions in the next lecture.

[Jordan Young 2J]

Boron also is an exception at times and there are some elements in the periodic table that can hold more than 8 electrons, but I think we'll talk about these in class at some point.

[Daniel Martinez 1k]

During Wednesday's lecture, he mentioned H, He, Li, and Be as being exceptions to the octet rule because it was very unlikely that they would gain the electrons needed to complete an octet.

[Kelvin Chung 1C]

Boron also is an exception at times

Boron typically has 6 valence electrons, forming 3 covalent bonds. Right?

[rachel liu 3k]

Boron also is an exception at times

Boron typically has 6 valence electrons, forming 3 covalent bonds. Right?

Yup!

[Claire Lo 3C]

also P, S, Cl may exceed the octet rule

[ayushibanerjee06]

also P, S, Cl may exceed the octet rule

Yeah, Dr. Lavelle said these elements can exceed the octet rule because they have empty d orbital electrons

[Nicholas_Gladkov_2J]

What are the octet exception examples that we usually need to know on tests?

In addition to the octet examples that others mentioned (H, He, Li, Be, and occasionally B), elements after phosphorus can have an expanded octet due to the additional d shell orbitals in n=3 and after.

[NicoJones_1B]

Why are H, He, Li, and Be able to exceed the normal level of valence electron bonds?