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expanded-octet

Posted: Sun Oct 27, 2019 3:19 pm
by Kyle Thorin
I know Dr. Lavelle mentioned this in class, but why exactly are we allowed to use an expanded-octet?

Re: expanded-octet

Posted: Sun Oct 27, 2019 3:22 pm
by Sarah Blake-2I
The expanded octet is for elements that have d orbitals in the valence shell which accommodate additional electrons.

Re: expanded-octet

Posted: Sun Oct 27, 2019 3:24 pm
by Kendall 3H
The d subshell of an atom has 5 orbital and can therefore fit 10 electrons, meaning there can be 10 valence electrons rather than only 8.

Re: expanded-octet

Posted: Sun Oct 27, 2019 5:22 pm
by Rohan Kubba Dis 4B
Is there a general rule for the d-block elements for the expanded octet, or is it completely variable from element to element? Also, how are we able to derive the expanded octet numbers from these elements?

Re: expanded-octet

Posted: Sun Oct 27, 2019 5:44 pm
by RoshniVarmaDis1K
Kendall 3H wrote:The d subshell of an atom has 5 orbital and can therefore fit 10 electrons, meaning there can be 10 valence electrons rather than only 8.


To add on, it is possible for some molecules to have central atoms with more than 10 electrons. For example, SF6 has 12 electrons around the central atom.