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unit three vocab:

electrons and bonding

TermDefinition
aufbau principle electrons fill lower-energy atomic orbitals before filling higher-energy ones
covalent bond a bond in which two atoms share some of their valence electrons, therby creating a force that holds the two atoms together
electron affinity the potential energy chagne of the atoms when an electron is added to a neutral gaseous atom to form a negative ion.
electron orbitals regions within the atom in which electrons have the highest probability of being found
hund's rule every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied
ion any atom of group of atoms that bears one or more positive or negative electrical charges
lewis dot structure a way of representing atoms or molecules by shwoing electrons as dots surrounding the element symbol.
metallic bond a type of chemical bond in which a 'cloud' of free moving valence electrons is bonded to the positively charged ions in a metal
molecular geometry the geometry of where atoms are in relation to a central atom, taking into account lone pairs of electrons
octet rule states that elements gain or lose electrons to attain an electron configuration of the nearest noble gas
oxidation # the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom
pauli exclusion principle says that no two electron can have the same set of quantum numbers
VSEPR theory Valence Shell Electron Pair Repulsion theory is a model used to predict 3-D molecular geometry based on the number of valence shell electron bond pairs among the atoms in a molecule or ion
Created by: eliorag
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