Page 1 of 1
Posted: Tue Oct 24, 2017 10:43 am
Could someone explain the layout of the f-block on the periodic table?
Posted: 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.
Posted: 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.
Posted: 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.