Exceptions to the Octet Rule

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Shannon Asay 1C
Posts: 102
Joined: Fri Aug 09, 2019 12:16 am

Exceptions to the Octet Rule

Postby Shannon Asay 1C » Fri Oct 25, 2019 11:26 am

How is phosphorus in phosphorus pentachloride able to have more than an octet in its bonding structure?

405335722
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Exceptions to the Octet Rule

Postby 405335722 » Fri Oct 25, 2019 11:28 am

Phosphorus, Chloride, and Sulfur are all exceptions to the Octet Rule and can all, therefore, have an expanded octet.
This is because, they have that 2p orbital to "tap into" unlike elements such as Oxygen, Nitrogen, and Flouride.

Sarah Zhari 1D
Posts: 103
Joined: Sat Sep 14, 2019 12:16 am

Re: Exceptions to the Octet Rule

Postby Sarah Zhari 1D » Fri Oct 25, 2019 11:29 am

Atoms in period 3 or higher have d-orbitals in their valence shell which can accommodate more than 8 electrons, which is why these atoms are exceptions to the octet rule.


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