Periodicity and Atomic Structure
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Created by:
doctordonna on October 18, 2010
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Description:
Periodicity and Atomic Structure, Ionic Bonds and Some Main Group Chemistry, Formulas, Equations and Moles
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17 terms
Terms | Definitions |
|---|---|
 what is the equation for energy? | E=hv or E=hc/(lambda) |
| From high energy to low energy name the electromagnetic radiation | Gamma, X-rays, Ultraviolet, Visible, Infrared, Microwaves, Radio waves |
| From longest wavelength to shortest name the electromagnetic radiation | Radio, Microwaves, Infrared Visible, Ultraviolet, X-rays, Gamma |
| Balmer-Rydberg equation | 1/(lambda)=R[1/(m^2)-1/(n^2)] m= where an electron ended up n=where an electron started |
| Principal Quantum Number | symbolized by n, indicates the main energy level occupied by the electron |
| Angular Momentum Quantum Number | the quantum number that indicates the shape of the orbital |
| Magnetic Quantum Number | Gives the orientation in 3-dimensional space |
| s orbital shape | spherical |
| p orbital shape | dumbbell shaped |
| Pauli Exclusion Principal | no two electrons in the same atom can have the same set of four quantum numbers |
| Aufbau Principle | electrons enter orbitals of lowest energy first, each orbital can only hold 2 electrons and the electrons must have opposite spins |
| Hunds rule | If 2 or more orbitals have the same energy, 1 electron goes into each orbital until all are half filled then start pairing electrons with opposite spins |
| What is the period trend with respect to size? | The size of an atom increases going down a group, the size of an atom decreases going across a period (left to right) |
| How do you do electron configuration of ions? | For main group elements you add or remove electrons to get a noble gas configuration. For ex: Na=[Ne] 3s^1 Na+=[Ne] |
| Ionization energy | the amount of energy required to remove an electron from an atom |
| what it the ionization energy trend? | decreases going down a group, increases left to right across the periodic table |
| Electron affinity | The amount of energy required to add an electron to an isolated atom in the gas phase |
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