Valence electrons

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lauraxie2e
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

Valence electrons

Postby lauraxie2e » Wed Oct 30, 2019 9:58 am

What would be an example of an element that the d orbitals effect the number of valence electrons?

Marni Kahn 1A
Posts: 107
Joined: Thu Jul 25, 2019 12:17 am
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Re: Valence electrons

Postby Marni Kahn 1A » Wed Oct 30, 2019 10:05 am

PCl5 (phosphorus pentachloride), since P has 10 valence electrons

DesireBrown1J
Posts: 98
Joined: Wed Sep 18, 2019 12:18 am

Re: Valence electrons

Postby DesireBrown1J » Wed Oct 30, 2019 10:55 am

Phosphorus actually has 5 valence electrons because its electron configuration is [Ne]3s23p3. 3s23p3 are the outermost orbitals and have the highest energy levels, which make the electrons in here the valence electrons.

Jessica Li 4F
Posts: 115
Joined: Fri Aug 09, 2019 12:16 am

Re: Valence electrons

Postby Jessica Li 4F » Wed Oct 30, 2019 11:45 am

However, since phosphorus has a technically empty 3d orbital, it can bond to other elements in a way so that it can have up to 10 valence electrons, as with PCl5.
Hope that clarifies things!

stephaniekim2K
Posts: 79
Joined: Fri Aug 09, 2019 12:16 am

Re: Valence electrons

Postby stephaniekim2K » Wed Oct 30, 2019 8:59 pm

Sulfur, Phosphorous, and Chlorine all deviate from the octet rule because they have the extra d orbitals.

Cassandra_1K
Posts: 49
Joined: Wed Sep 18, 2019 12:16 am

Re: Valence electrons

Postby Cassandra_1K » Thu Oct 31, 2019 9:13 pm

How do you know when anions cannot behave as a lewis base?


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