Exception to Octet Rule  [ENDORSED]

Moderators: Chem_Mod, Chem_Admin

Ava Kjos 1D
Posts: 65
Joined: Fri Sep 28, 2018 12:19 am

Exception to Octet Rule

Postby Ava Kjos 1D » Tue Oct 30, 2018 10:43 pm

How do you know when an element can have more than eight electrons? Do we just need to memorize the exceptions or is there some way of figuring it out?

lindsey_ammann_4E
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Exception to Octet Rule

Postby lindsey_ammann_4E » Tue Oct 30, 2018 11:14 pm

The exceptions start in the second row of the p-block, and continue in the rows of the p-block below that.

Brian Cook
Posts: 34
Joined: Fri Sep 28, 2018 12:15 am

Re: Exception to Octet Rule  [ENDORSED]

Postby Brian Cook » Wed Oct 31, 2018 12:43 am

This is because elements in the 3d row and beyond have n=3 which means L can equal 0,1, and 2 (s,p,d). Elements in the 3rd row actually have access to the d block, allowing them to occupy more electrons, up to 10 more than the octet to be exact. Hope this helps :)

Lauren Huang 1H
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: Exception to Octet Rule

Postby Lauren Huang 1H » Wed Oct 31, 2018 12:44 am

Some common elements that have expanded octets are sulfur, phosphorus, silicon, and chlorine.


Return to “Lewis Structures”

Who is online

Users browsing this forum: No registered users and 2 guests