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Embed code for: Exam 1 Tidbit Sheet 2015
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A tidbit sheet is a random sheet composed of useful equations, explanations and random thoughts I thought may be helpful. Remember, these are just my thoughts to help guide you in the right direction. This sheet will NOT give you all the information you need for the exam…..please refer to your other materials for further information.
Prefixes used in the Metric System
Prefix: nano micro milli centi deci meter deca hecta kilo mega giga
Symbol: n µ m c d m D h k M G
Meaning 10-9 10-6 10-3 10-2 10-1 base 101 102 103 106 109
Representation of the atom: AZE A: Mass Number Z: Atomic Number
λ*v=c c=3.00x108 ms-1
E=hv h=6.626x10-34Js (Planck’s constant)
E=mc2 Einstein’s Equation
λ=h/m(speed) deBroglie’s wavelength equation
The smaller the wavelength, the higher the resolution (inversely related)
Heisenberg’s Uncertainty Principle
∆x decreases, ∆px increases causing it to get wider
Electron Configuration aka Quantum Mechanics
Principle quantum number
Orbital angular momentum
Orbitals of subshell
Shapes of the Orbital
The electron configuration can be determined from the periodic table (Scientist Don’t Play Football)
Possible Quantum Numbers
1, 2, 3, 4, …..
0, 1, 2,… n - 1
-l and +l
Orbitals & Electrons
# of Orbitals
# of Electrons
-1, 0, +1
-2, -1, 0, +1, +2
-3, -2, -1, 0, +1, +2, +3
Electron Configuration formula: Example: Na= [Ne] 3s1 [Ne]= 1s22s22p6
Periodic Table Trends
Left to Right
Top to Bottom
Effective Nuclear Charge
Atomic Radii/Ionic Radii
Easy to LOSE electrons
Easy to GAIN electrons
Do not GAIN electrons easily
Do not LOSE electrons easily
This is NOT a complete review of what you may need to know for Exam 1. This is merely designed to help you get started. Review your lecture notes, worksheets and quizzes to fully prepare for the exam. Good Luck!
Exam 1 TidBit Sheet
Shore Fall 2015