Exceptions to octet rule

Moderators: Chem_Mod, Chem_Admin

annikaying
Posts: 94
Joined: Sat Sep 14, 2019 12:16 am

Exceptions to octet rule

Postby annikaying » Sun Nov 03, 2019 9:12 am

Which elements can break the octet rule when forming lewis dot structures and is it likely or just when necessary?

rabiasumar2E
Posts: 108
Joined: Thu Jul 11, 2019 12:15 am

Re: Exceptions to octet rule

Postby rabiasumar2E » Sun Nov 03, 2019 10:15 am

In lecture he said that atoms in period 3 or higher can accommodate additional electrons because they have d-orbitals, allowing them room to do so. I think breaking the octet rule is done when trying to draw the lewis structure most accurately with the lowest energy or sometimes just to get the right amount of electrons to show. It just depends on the situation.

805291863
Posts: 100
Joined: Sat Sep 14, 2019 12:16 am

Re: Exceptions to octet rule

Postby 805291863 » Sun Nov 03, 2019 3:46 pm

The other exception to the octet rule is atoms that do not need 8 electrons to be stable. H and Li only want 2 electrons, and B can be stable with 6 electrons.

005162520
Posts: 101
Joined: Tue Sep 24, 2019 12:17 am

Re: Exceptions to octet rule

Postby 005162520 » Sun Nov 03, 2019 11:29 pm

Another exception include radicals in which electrons have incomplete octets because their electrons have unpaired spins such methyl radical.

Ruby Richter 2L
Posts: 103
Joined: Thu Jul 25, 2019 12:17 am

Re: Exceptions to octet rule

Postby Ruby Richter 2L » Sun Nov 03, 2019 11:49 pm

What would be another example of a radical having an incomplete octet because of unpaired spins?


Return to “Lewis Structures”

Who is online

Users browsing this forum: No registered users and 0 guests