## Effective Nuclear Charge and Electron shielding [ENDORSED]

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Andrew Nguyen 2I
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Joined: Fri Sep 29, 2017 7:07 am

### Effective Nuclear Charge and Electron shielding

Zeff talks about electrons penetrating the nucleus while other electrons are less able to penetrate such making it less susceptible to the pull of the nucleus. Electron shielding talks about how certain electrons are closer to the nucleus due to a lower shell, while other electrons are in a higher shell farther from the nucleus, making it also less susceptible to the pull of the nucleus.

It seems that the two topics are related if they're different concepts. Can someone explain the relationship between the two concepts if they are in fact different?

Chem_Mod
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### Re: Effective Nuclear Charge and Electron shielding

The effective nuclear charge $Z_{eff}e$ is a measure of the attractive strength of the nucleus towards a particular electron in the atom. It does not describe the phenomenon causing the reduction in nuclear charge, which is the shielding.

Andrea ORiordan 1L
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### Re: Effective Nuclear Charge and Electron shielding  [ENDORSED]

Electron shielding refers to the repulsion between two negative electrons, which decreases the nuclear charge/pull towards the nucleus that any one shielded electron "feels". The effective nuclear charge is the pull towards the nucleus that an electron "feels".

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