Practice Problem 11
Predict the group in the periodic table in which element 114 belongs. What oxidation states are expected for this element?
We can use the aufbau principle to predict the following electron configuration for element 114:
This configuration can be abbreviated as follows:
X = [Rn] 7s25f146d107p2
In chapter 8, we concluded that filled d and f subshells are ignored when valence electrons on an atom are counted. Thus, the valence electrons for this element are the 7s2 and 7p2 electrons. The element therefore belongs in Group IVA, directly below Pb. Possible oxidation states are +2 and +4.