Incomplete Octets

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305421980
Posts: 101
Joined: Sat Sep 07, 2019 12:16 am

Incomplete Octets

Postby 305421980 » Wed Nov 13, 2019 11:49 am

Which atoms can have an incomplete octet? How do we identify them?

RoshniVarmaDis1K
Posts: 51
Joined: Sat Aug 24, 2019 12:16 am

Re: Incomplete Octets

Postby RoshniVarmaDis1K » Wed Nov 13, 2019 12:10 pm

There are some atoms that have incomplete octets because it makes them more stable or it is in line with the number of bonds they "like" to form.

The most common examples are:
H is stable with 2 valence electrons.
Be is stable with 4 valence electrons.
B and Al are stable with 6 valence electrons.

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Incomplete Octets

Postby Angela Patel 2J » Wed Nov 13, 2019 12:12 pm

It's important to note that elements like carbon, nitrogen, and oxygen should not have expanded octets

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

Re: Incomplete Octets

Postby Ruby Richter 2L » Wed Nov 13, 2019 8:12 pm

Just for clarification, how exactly does an atom having an incomplete octet make it more stable?

Michael Du 1E
Posts: 117
Joined: Sun Sep 22, 2019 12:16 am

Re: Incomplete Octets

Postby Michael Du 1E » Thu Nov 14, 2019 10:01 am

Ruby Richter 4G wrote:Just for clarification, how exactly does an atom having an incomplete octet make it more stable?

You can check the formal charge of the atom with the incomplete octet, and it would have a formal charge of 0, meaning it didn't gain or lose any electrons, making it stable. Hope this helps!


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