SPD

s=2

p=6

d=10

For the question that was asked in per #4. Here is the answer I found for you.

The orbital labels s, p, d, and f originate from a now-discredited system of categorizing spectral lines as sharp, principal, diffuse, and fundamental, based on their observed fine structure. When the first four types of orbitals were described, they were associated with these spectral line types, but there were no other names.

Here are some links that my help you as we go forward in chem. I did not make these, but a teacher at the University of Texas did. Electron Configurations. andThe periodic table.