Difference between revisions of "Pauli exclusion principle"
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The '''Pauli Exclusion Principle''' states that no two [[electron]]s in the same [[atom]] can have the same set of quantum numbers. This set is made up of | The '''Pauli Exclusion Principle''' states that no two [[electron]]s in the same [[atom]] can have the same set of quantum numbers. This set is made up of | ||
| − | + | * [[Principle quantum number]] <i>n</i>: this is the shell around the atom where the electron exists. The shells are represented by whole numbers. n can be 1,2,3.... | |
| − | + | * [[Orbital quantum number]] <i>l</i> is the number of subshells within a shell. l can be 0,1... to (n-1) | |
| − | + | * [[Magnetic quantum number]] <i>m<sub>l</sub></i> is the number of orbitals within the subshell. m<sub>l</sub> can be 0,1...all the way to <sup>+</sup>/<sub>-</sub> l | |
| − | + | * [[Spin quantum number]] m<sub>s</sub> is the spin of the electron. there are two spins per subshell. they are represented by a +1/2 or -1/2 | |
| + | |||
| + | ==References== | ||
| + | * [http://hyperphysics.phy-astr.gsu.edu/HBASE/qunoh.html#c2] | ||
[[Category:Chemistry]] | [[Category:Chemistry]] | ||
| + | [[Category:Quantum mechanics]] | ||
| + | [[Category:Physics]] | ||
Revision as of 01:58, November 7, 2009
The Pauli Exclusion Principle states that no two electrons in the same atom can have the same set of quantum numbers. This set is made up of
- Principle quantum number n: this is the shell around the atom where the electron exists. The shells are represented by whole numbers. n can be 1,2,3....
- Orbital quantum number l is the number of subshells within a shell. l can be 0,1... to (n-1)
- Magnetic quantum number ml is the number of orbitals within the subshell. ml can be 0,1...all the way to +/- l
- Spin quantum number ms is the spin of the electron. there are two spins per subshell. they are represented by a +1/2 or -1/2