Chemistry Notes on Atomic Structure, Electron Configuration, Periodic Trends and Bonding
Electron Configuration Table
Paramagnetic - elements that have unpaired electrons
Dimagnetic - elements that do not have unpaired electrons
Pauli Exclusion Principle - No 2 electrons can have identical quantum numbers and will be found in opposite spins as marked by a (-1/2 and 1/2)
Degenerate orbitals - orbitals with the same principal energy levels (n) have the same amount of energy because there is no electron-electron repultion, only proton-electron attraction and kinetic energy motion.
Principal Energy Levels(n)
Excited Electron States
Wavelength and Photons
When you excite an electron (give it energy) it moves to a higher energy level. When it returns to the ground it gives off wave energy (some type of light).
- Speed of light: λv=C
- Plank's Constant: ΔE=hv
- v=hertz/frequency (cycles per second)
- Energy=mass x the speed of light (C0
- deBroglie's Equation: λ=h/(m)(v)
Periodic Table Trends
- Ionization energy - decreases down a group, increases across a period
- Electronegativity - decreases down a group, increases across a period
- Atomic Radius - increases down a group, decreases across a period
***The electrons ALWAYS want to be as far apart as possible!***
Number of electron pairs and VSEPER (Valance Shell Electron Pair Repulsion) arrangement.
- 2 pairs = linear
- 3 pairs = Trigonal planar
- 4 pairs = tetrahedral
- 5 pairs = Trigonal bipyramidal
- 6 pairs = Octahedral
If you found this article helpful please remember to:
Vote it UP!
Leave a comment or question.
More by this Author
Did Thomas Jefferson support the French Revolution? Information on his standpoint and opinions. The French Revolutions. French and France. French Revolution. Thomas Jefferson Pictures.
Were the 13 colonies justified in declaring the Declaration of Independence to be Justified? The amendments they came up with. The 13 colonies were...
Here's a great example of a proposal essay with simple and easy step-by-step instructions on how to write an effective paper. Getting an A on a proposal paper is simple if you follow some simple steps