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Glossary of chem quiz 4.2

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de Broegli
proposed that electrons had both wave and particle properties
Shrodinger
laid the foundation for modern quantum theory with his wave equation
Heisenburg
uncertainty principle
uncertainty principle
states that it is impossible to determine simaltaneously bothe the position and velocity of an electron or any other particle
quantum theory
described the location of electrons in terms of orbitals
orbital
a three dimensional region about the nucleus in which a particular electron can be located
principal quantum number
indicates the main energy levels surrounding a nucleus
orbital quantum number
the shape of an orbital - sublevel
-suborbital
n
# of energy levels
magnetic quantum nuber
the orientatino of an orbital about the nucleus
spin quantum number
(+1/2)(-1/2) indicate the two possible states of an electron in an orbital
electron configuration
arrangement of electrons in atoms
aufbau's principle
an electron occupies the lowest energy level that can recieve it
hund's rule
orbitals of equal energy are each occupied y one electron before any one orbital is occupied by a second electron and all electrons in asingl occupied orbitals must have the same spin
pauli exclusion principle
no two electrons in the same atom can have the same set of four quantum numbers

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