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14 Cards in this Set

  • Front
  • Back

Bohr Model


"planetary model"

-2D model


-electrons orbit around the nucleus of rings


-this is all INCORRECT

Heisenberg and Shrodinger


(Quantum Mechanical Model of an Atom [QMM])

-3D model


-electrons are located around the nucleus of an atoms


-this is all CORRECT

Heisenberg's Uncertainty Principal

-one can not know the location and the speed of an electron at the same time

Quantum of Energy

-each electron is associated with a different amount of energy


-relates to an electrons location to the nucleus


(close to nucleus--> low energy)


(far from nucleus--> high energy)

Levels of Organization


Principal Energy Level (PEL)

-non specific regions of space around a nucleus where an electron is located


-PELs 1-7


-PEL 1 = close to nucleus (low energy)

Levels of Organization


Sublevel

-very specific region of space where an electron is located


-within PELs


-4 types of Sublevels


s--> sphere--> 2 electrons


p--> infinity symbol--> 6 electrons


d--> 4 point star--> 10 electrons


f--> 8 point star--> 14 electrons

Levels of Organization


Orbitals

-number of Sublevels within a PEL

PELs and Sublevels

PEL Sublevel(s) Max. Number of Electrons


1 s 2


2 s,p 8


3 s,p,d 18


4-7 s,p,d,f 32

Pauli's Exclusion Principal

-maximum of two electrons in each Orbital


-each electron has "opposite spin"

Hund's Rule

-electrons fill separate Orbitals first in the same Sublevels

Aufbau's Principal

-electrons fill up the lowest PELs first

Valance Electrons

-any/all electrons farthest from the nucleus


-electrons in the outer most level (highest PEL)


-atom--> ion take/add electrons to valance shell

Noble Gas Configuration

-"abbreviated version" of Electron Configuration


1)choose Noble Gas closest to the element without going over


2)put the Noble Gas in brackets


3)build the rest of the electronic configuration

Electron Configuration

-the distribution of electrons of an atom