Period 3 Elements

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Alvaro Chumpitaz 4D
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Joined: Wed Sep 11, 2019 12:17 am

Period 3 Elements

Postby Alvaro Chumpitaz 4D » Sat Oct 26, 2019 9:29 pm

Why can some Period 3 elements not follow the octet rule? For example, P, S, Cl

Posts: 95
Joined: Thu Jul 11, 2019 12:17 am

Re: Period 3 Elements

Postby 505316964 » Sat Oct 26, 2019 9:45 pm

I believe this has to do with the larger size of period 3 elements and how they are able to accommodate more bonds.

Helen Struble 2F
Posts: 97
Joined: Sat Aug 24, 2019 12:17 am

Re: Period 3 Elements

Postby Helen Struble 2F » Sat Oct 26, 2019 11:22 pm

Period 3 elements have access to the 3d orbital even though they fill the 3p orbital first. Electrons in the d orbital still can function as valence electrons. This allows them to form more bonds/have more lone pairs than the octet rule would typically allow.

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