Elements that break the octet rule

[Brianna Brockman 1F]

So I know that Br, I, and P can break the octet rule in lewis structures, but I read that there are other elements that can do this too, like Cl occasionally. Which elements are we required to know that break the octet rule for this class?

[Chloe Thorpe 1J]

I think H, He, Li, Be, and anything in group 13 can have an incomplete octet. Any element in row 3 or below can have an expanded octet because of the d-orbital.

[Kessandra Ng 1K]

Just remember that if the element can have access to the d-orbital, then it will be able to have an expanded octet as electrons can 'go' into that orbital.

[Jack Hewitt 2H]

So I know that Br, I, and P can break the octet rule in lewis structures, but I read that there are other elements that can do this too, like Cl occasionally. Which elements are we required to know that break the octet rule for this class?

It is better to think of it conceptually that if an element has access to a d-orbital it can have an expanded octet rather than trying to memorize specific elements.

[Mark 1D]

The elements in the d block can violate the octet rule because of the presence of the d orbital into which more electrons can reside

[305117729]

Generally, elements with d orbital, e.g. elements in 3rd period, will have expanded octet

[uhedlund]

Elements with a d-orbital may have an expanded octet. This is generally elements in row 3 or lower.