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Intramolecular Bonds

AB
ionic bondtransfer of electrons from metals to nonmetals
electronegativity difference > 1.7ionic
electronegativity difference < 0.2nonpolar covalent
electronegativity difference 0.2 - 1.7polar covalent
formula unitgives the ratio of cations to anions
covalent bondbetween nonmetallic elements, electron orbitals overlap, a pair of electrons is simultaneously attracted to two nuclei which results in lowering of energy
bond length of a covalent bonddistance of two nuclei at the minimum potential energy level
polar covalent bondare bonds in which electrons are shared unequally
nonpolar covalent bondare bonds in which electrons are shared (fairly) equally
coordinate covalent bondare bonds formed when one atom contributes both bonding electrons
resonance structuresare drawn when more than one Lewis dot structure for a molecule is possible
metallic bondvalence electrons are not bound to any particular cation, but are free to move throughout the metallic crystal
properties of metalsgood conductors of electricity, ductile, malleable
alloymetallic substances composed of two or more elements - at least one of these elements is a metal
stainless steeliron, chromium, carbon and nickel
sterling silversilver and copper
14 karat goldgold and copper
brass/bronzecopper and zinc
unit cell arrangementsgive crystals their shape
Gilbert Lewisdivised Lewis dot diagrams


Central Bucks High School South
Warrington, PA

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