Multiple Electron Atoms

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Kyra Dingle 1B
Posts: 55
Joined: Fri Sep 29, 2017 7:04 am

Multiple Electron Atoms

Postby Kyra Dingle 1B » Wed Nov 01, 2017 7:37 pm

Can someone elaborate further on the effective nuclear charge and how it relates to electron shielding in multiple electron atoms?

Christine Wastila 1H
Posts: 61
Joined: Fri Sep 29, 2017 7:04 am

Re: Multiple Electron Atoms

Postby Christine Wastila 1H » Wed Nov 01, 2017 8:05 pm

Effective nuclear charge is the net charge an electron experiences in a multiple electron atom. Shielding occurs when electrons in the inner shells prevent electrons in the outer shells from feeling the full positive charge of the nucleus. Thus, electrons closer to the nucleus have a higher effective nuclear charge than those in outer shells.

Emily Glaser 1F
Posts: 156
Joined: Thu Jul 27, 2017 3:01 am

Re: Multiple Electron Atoms

Postby Emily Glaser 1F » Fri Nov 03, 2017 12:06 am

The effective nuclear charge also relations to the ionization energy trend. For example, take Francium, one of the largest atoms on the periodic table. It has a very low ionization energy due to the immense number of inner electrons shielding its valence electrons, which means the energy required to take an electron is so low.

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