1. Find the electron configuration of the following:
a) silicon: [Ne] 3s2 3p2
b) tin: [Kr] 5s2 4d10 5p2
c) lead: [Xe] 6s2 4f14 5d10 6p2
2. Scenario: You are currently studying the element iodine and wish to use its electron distributions to aid you in your work.
a) Find the electron configuration of iodine
[Kr] 5s2 4d10 5p5
b) How many unpaired electrons does iodine have?
To find the answer we refer to part a) and look at the valence electrons. We see that iodine has 5 electrons in the p orbitals. We know that the full p orbitals will add up to 6. Using the Hund's rule and Pauli exclusion principals we can make a diagram like the following: