expanded octets

[Emely Reyna 1F]

Hello!
I was a bit confused on the concept of the expanded octet while drawing lewis structures.
I know that any element with a 3d orbital will have an expanded octet but up to how do I know up to how many electrons it can hold?

[Jose Lupian 1C]

I think that you would put all the remaining electrons into the central atom as long as the octets of the surrounding atoms are full.

[joannehaddad]

Yes, with an expanded octet, it is referring to the octet of the central atom!

[Kara Justeson 1B]

I'm not completely sure, but I think with the expanded octet it can hold up to as many electrons as the largest orbital of that element. For example, if it had a 3d subshell, since it has a d orbital it should be able to hold up to 10 electrons in the expanded octet.

[yazminedesan1F]

usually i add bonds from each element to the central element and try and give them each an octet with what remaining electrons i have

[Anthony Mercado 1K]

In the construction of Lewis models, is the rule for expanded octets as follows: If it is on period (3) of the periodic table or lower, it will be able to handle an expanded octet? *Does this follow for all elements on period (3) of the periodic table?