Expanded Octet

[Elena Saab 4A]

Are the atoms in the middle of a molecule generally the atoms with an expanded octet (rather than atoms on the periphery)? For example, in ICl4^-, even though it would make more sense for one of the Chlorine atoms to hold the negative charge because it is more electronegative than Iodine, the Iodine carries it. Thanks!

[Ronak Singh]

The central atoms usually have the expanded octet because they form the most bonds.

[Rhea Churi 4K]

Yes, Iodine is larger and has more orbitals, so it has more electrons to make bonds.

[Avery Zuelch 1D]

The atom that is in row three or below is able to form an expanded octet!

[daniella_knight1I]

The largest atom can make expanded octets because they have more shells.