Electron Subshells  [ENDORSED]

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Electron Subshells

Postby RahilVaknalliDis3A » Sun Oct 29, 2017 2:59 pm

What does it mean when we say that an electron can penetrate through the inner shells? The book mentions how the s electron can penetrate through the inner shells. Is this valid for all elements?

Suchita 2I
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Re: Electron Subshells

Postby Suchita 2I » Sun Oct 29, 2017 3:51 pm

Electron penetration describes the ability of an electron to approach the nucleus. This ability depends of the attraction of an electron to the nucleus, so 2s electrons have a higher electron penetration than 2p electrons as they have a higher relative electron density near the nucleus. Since, this is a property of electrons in multi-electron systems, I would assume that this is valid for all elements other than Hydrogen.

Ozhen Atoyan 1F
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Re: Electron Subshells  [ENDORSED]

Postby Ozhen Atoyan 1F » Sun Oct 29, 2017 4:17 pm

To add to the previous reply, while you move across the period from left to right, Z effective increases. This is due to high electron density within the same shells, which causes electron repulsion to increase. This then allows the nucleus-electron attraction to be strong, and the nucleus can reach the electrons and pull them towards it (penetration).

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