Unit Test

Overall, I feel like I  did well on this unit's test. I knew the material well, but there were a lot of questions to answer within the hour, so I did not have time to work some math problems or double check any of the answers I was unsure about. Hoping for the best.

Time Management During Tests

Quantum Numbers

There are 4 quantum number for each specific electron.

1. Principle Quantum Number
2. Angular Momentum Number
3. The Magnetic Quantum Number
4. The Spin Quantum Number

Practice Quiz

Ionization Energy vs Electron Affinity

     Ionization energy is the energy needed to remove an electron from a gaseous atom. The first ionization energy is the energy required for removal of the first electron. Electron affinity, on the other hand, can be thought of as the ease with which an electron may be added to an atom, creating an anion. They are essentially opposite in definition, but they both increase as you move and up and right on the periodic table.

Sublevels

There are four different sublevels: s, p, d, and f.



Note: Do not forget helium, an element in the s-block, that is hidden in the p-block.

Unit Quiz

Last week we took our weekly quiz for this unit and it went well. I got a grade that is lower than what I had hoped, but it was still higher than most of my other quizzes. After having got the quiz back, I release all of my little mistakes and where I went wrong. I will hopefully not make similar mistakes on the upcoming unit test. This unit seems like a lot of memorization, so maybe that is why I am doing better than many past units.

Rules for Placing Electrons

There are three basic rules for placing electrons. They are listed below:

1. Aufbau Principle: electrons enter orbitals of lowest energy first.
2. Pauli Exclusion Principle: an orbital can only contain two electrons with opposite spin.
3. Hund's Rule: within a sublevel, electrons enter singly before pairing up