Electron Shielding

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derinceltik1K
Posts: 51
Joined: Sat Aug 17, 2019 12:15 am

Electron Shielding

Postby derinceltik1K » Sun Oct 27, 2019 4:00 pm

Can someone explain this phenomenon and also penetration? I know that they effect the radius but I don' understand how it does not have any correlation with the subshells but it depends on the Principal Quantum Number?

Reagan Smith 1H
Posts: 50
Joined: Sat Jul 20, 2019 12:16 am

Re: Electron Shielding

Postby Reagan Smith 1H » Sun Oct 27, 2019 4:04 pm

Electron shielding is just the concept that electrons closer to the nucleus act as a shield to those further from the nucleus, making the outermost electrons have less of a pull toward the positive nucleus because the magnetic pull is basically being blocked by the closer electrons.

asannajust_1J
Posts: 105
Joined: Wed Sep 11, 2019 12:16 am
Been upvoted: 1 time

Re: Electron Shielding

Postby asannajust_1J » Sun Oct 27, 2019 4:05 pm

Basically the electrons that are closer to the nucleus (in smaller sublevels s<p<d<f) are better at shielding. For example, electrons in the s orbital are better at shielding than the p orbital since they are closer to the nucleus and experience a greater nuclear charge in addition to the fact that the p electrons are repelled to the s electrons. The same goes for higher orbitals. In terms of quantum numbers, the lower ones are better at shielding because the n number corresponds to which energy level n=1,2,3.. and l number corresponds to whether it belongs to l= 0,1,2.. s, p, or d. The smaller the quantum numbers, the closer it is to the nucleus (generally speaking).

aishwarya_atmakuri
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

Re: Electron Shielding

Postby aishwarya_atmakuri » Sun Oct 27, 2019 4:16 pm

Electron shielding refers to the blocking of valence shell electron attraction by the nucleus due to the presence of inner-shell electrons. Penetration describes the proximity to which an electron can approach to the nucleus. The principal quantum number gives you an idea of how close the electron is to the nucleus (n=1 is closer than n=3). The closer an electron is to the nucleus, the greater its penetration.


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