L5-Properties_of_Atoms

L5-Properties_of_Atoms - Atomic Orbitals Part I Properties...

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Part I Properties of Atoms: Atomic Orbitals 1 Atomic Orbitals The electron cloud the space occupied by all electrons in all orbitals of an atom 2 Atomic Orbitals orbital: the space where there is a high probability of Fnding an electron each orbital is deFned by 3 quantum numbers n (size), l (shape) and m (orientation) each shell has n 2 orbitals each orbital can have a maximum of 2 electrons each shell can have a maximum of 2n 2 electrons 3 Atomic Orbitals: Notation Each shell ( n ) can have different sublevels ( l ) ! Electron 1 • 1 st energy level • 1 st subshell n = ! Electron 2 • 2 nd energy level • 1 st subshell n = l = l = 1 0 s 1 s 2 0 s 2 s 4
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The Wave Function ( ! ) a mathematical description of the electron in terms of position in three dimensions a mathematical representation of where the electron is likely to be in 3 dimensional space ! 2 : a measure of the probability that the electron can be found within a particular tiny volume of the atom 5 Shapes of Orbitals: s ( l = 0) ! as the distance from the nucleus increases, the probability of ±nding an electron at that distance _________ decreases. ! the peak of the curve is where the electron spends _____ of its time. most • at this radius, are most likely to fnd an electron. ! for a given s orbital, the probability
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This note was uploaded on 09/24/2009 for the course CHEM 333 taught by Professor Baird during the Spring '09 term at UC Davis.

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L5-Properties_of_Atoms - Atomic Orbitals Part I Properties...

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