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Chem. Test 11/01/11

Term/PrincipleDefinition
Pauli Exclusion Principle No 2 electrons in the same element can have the same address.
isoelectronic When an ion has the same configuration as another pure element.
Octet Rule All elements desire to have a full outer shell( w/ 8 electrons) and will obtain electrons or get rid of them (whichever more convenient) to reach fullness.
electronegativity EN; msrmt. of the attraction for electrons
ionization energy amt. of energy needed to remove an electron
atomic radius nucleus to nucleus msrmt. ___________________________ 2
Periodic Law the periodic table is organized by which ionization energy is the highest atomic number
Aufbau Principle electrons will go to lowest energy orbitals 1st
quantum numbers: 2 Principal Q. #; energy levels
quantum numbers: s Angular Momentum Q. #; shape of orbital; sublevels, blocks
quantum numbers: x, y, z or -1, 0, 1 Magnetic Q#; orientation(how the orbitals sit)
Heisenberg Uncertainty Principle We never w/ certainty know the exact location of an electron.
Hund's Rule Electrons must be placed one at a time in p, d, and f blocks before you double up.
Explain levels of EN, AR, and IE on periodic table. As Atomic radius decreases(left to right), Electronegativity and Ionization energy increase.
Created by: hcmeek