What elements can have more than 8e-?
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 110
- Joined: Fri Sep 24, 2021 5:27 am
- Been upvoted: 1 time
What elements can have more than 8e-?
In Monday's class Dr. Lavelle explained that in the case of the Lewis Structure for sulfate Ion, for it to be stable and the formal charge to be equal to 0, sulfure must hold 12 electrons in it's outer shell. How do we know when an element is supposed to have an expanded octet? Does this only happen for ions?
-
- Posts: 23858
- Joined: Thu Aug 04, 2011 1:53 pm
- Has upvoted: 1253 times
Re: What elements can have more than 8e-?
I will discuss this in detail in Wednesday's class and do more examples.
The answer is row 3 elements and onwards can use d states/orbitals in bonding and therefore have more than an octet.
The answer is row 3 elements and onwards can use d states/orbitals in bonding and therefore have more than an octet.
-
- Posts: 104
- Joined: Fri Sep 24, 2021 6:52 am
Re: What elements can have more than 8e-?
The textbook in chapter 2C (Beyond the Octet Rule), it says that the central atom that has an empty d-orbital (p-atom of period 3 or later) can hold more than 8e-.
-
- Posts: 76
- Joined: Fri Sep 24, 2021 5:49 am
Re: What elements can have more than 8e-?
Atoms that have access to D-orbitals are no longer restrained to the octet rule
-
- Posts: 118
- Joined: Fri Sep 24, 2021 6:26 am
Re: What elements can have more than 8e-?
Hi!
Entering the 3rd energy level causes the d orbital to become available; this allows for an expanded octet, or more than 8 e-. Therefore, elements in energy levels 1 and 2 cannot have expanded octets because only the s and p orbitals are available to them.
Entering the 3rd energy level causes the d orbital to become available; this allows for an expanded octet, or more than 8 e-. Therefore, elements in energy levels 1 and 2 cannot have expanded octets because only the s and p orbitals are available to them.
-
- Posts: 102
- Joined: Fri Sep 24, 2021 7:05 am
Re: What elements can have more than 8e-?
Beginning in the third period, atoms that contain subshells 3d and beyond can hold more than 8 electrons because these subshells hold more electrons.
Re: What elements can have more than 8e-?
Elements with d-block orbitals. This is possible because the energy difference between empty 3d orbitals and 4s orbitals are about the same, hence additional d orbitals can hold more electrons.
Who is online
Users browsing this forum: No registered users and 12 guests