Term
Pauli Exclusion Principle |
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Definition
| Pauli Exclusion Principle: No 2 electrons in a given atom can possess the same set of 4 quantum numbers |
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Term
The Quantum Numbers (name, symbol, what is specifies, what its value can be, and how many electrons allowed in each region) |
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Definition
- Principle Quantum Number (n) - size - n= positive integer - the greater n is, the higher the energy level and radius of the electron's orbit is.
- max number of electrons in each energy level is 2n2. - Azimuthal (angular momentum) Quantum Number (l) - shape - l=0 to n-1 - refers to the subshells that occur within each principle energy level - max number of electrons in each subshell is 4l+2.
- Magnetic Quantum Number (ml) - orientation of the orbitals - ml= l to -l - specifies the particular orbital within a subshell where an electron is likely to be found - max number of electrons is 2.
- Spin Quantum Number (ms) - ms= -1/2 or 1/2 - specifies in which direction an electron is spinning.
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Term
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Definition
| Hund's Rule: Every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin. |
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Term
Planck's Quantum Theory Bohr's Model |
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Definition
Planck's Quantum Theory - energy emitted as electromagnetic radiation from matter comes in discrete bundles call quanta...E=hf Bohr's Model - depicts that atom as a small, positively charged nucleus, surrounded by electrons orbiting the nucleus in distinct circular paths, much like a solar system, but with electrostatic forces providing the attraction rather than gravity. |
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Term
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Definition
| Aufbau Principle - Electrons fill the lowest energy levels first |
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Term
| Equation for Formal Charge |
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Definition
| Formal Charge= Valence Electrons - 1/2(Bonding electrons) - Nonbonding electrons |
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