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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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covalent bond
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two-electron bond in which the bonding atoms share the electrons. formed when two nonmetals combine
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molecule
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discrete group of atoms held together by covalent bonds
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diatomic molecule
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contains on two atoms
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hydrogen, nitrogen, flourine, oxygen, chlorine, bromine, iodine
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lone pairs
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unshared electron pairs
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lewis structure
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shows the connectivity between the atoms, as well as where all the bonding and nonbonding valence electrons reside
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molecular formula
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shows the number and identity of all of the atoms in a compound
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double bond
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contains four electrons in two two-electron bonds
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triple bond
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contains six electrons in three two-electron bonds
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single bond
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two electrons bonded together
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electronegativity
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measure of an atoms attraction for electrons in a bond
the higher the valure the more elecronegative an atom is, the more it is attracted |
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nonpolar
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whenever two identical atoms are bonded together, each atom attracts the electrons in the bond to the same extent. equally shared.
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polar
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bonding between atoms of different electronegativity results in the unequal sharing of electrons. different between two atoms is .5 units or greater
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bond length
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optimum distance between nuclei in a covalent bond
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coordinate covalent bonds
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structure of element in simplest form. copound held together by covalent bonds.
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binary compound
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chemical compound composed of two elements
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