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Postby rkusampudi » Tue Oct 24, 2017 10:43 am

Could someone explain the layout of the f-block on the periodic table?

Eli Aminpour 2K
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Re: f-block

Postby Eli Aminpour 2K » Tue Oct 24, 2017 11:23 am

The f block is a series of elements that would enter between group three and group four. The reason these elements are in the f block is because one or more of their outermost electrons is in the f orbital. If you were add the f block elements to the periodic table, it would expand in width.

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Re: f-block

Postby Brigita1D » Thu Oct 26, 2017 1:15 pm

Side note: Professor Lavelle reminded us in class the other day that we only have to worry about the s,p, and first row of the d block. Most f-block elements are rare and unstable.

Curtis Tam 1J
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Re: f-block

Postby Curtis Tam 1J » Thu Oct 26, 2017 1:23 pm

The f block starts filling 2 blocks behind. It also goes in an irregular order since the energy differences between the higher principal quantum numbers get smaller and smaller. Therefore, there is a greater variation in electronic configuration with negligible deviations in energy from configurations formed from "normal" building up.

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