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20 Cards in this Set
- Front
- Back
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ionic bond
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bonds resulting from the electrostatic attraction of cations and anions. en difference is greater than 1.7
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covalent bond (polar)
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polar: electrons are unequally shared. en difference is in between 0.3 and 0.7.
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covalent bond (non-polar)
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electrons are shared equally. en difference is in between 0 and 0.3
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metal
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solid at room temp.. dense, high melting point, conducts electricity, lose electrons.
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non metal
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gas at room temp, low boiling point, does not conduct electricity, gain electrons
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lone pair
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a pair of electrons that is not involved in bonding and that belongs exclusively to one atom.
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octet rule
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chemical compounds tend to form so that each atom, by gaining, losing, or sharing electrons, has an octet of electrons in its highest occupied energy level
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ionization energy
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the energy required to remove one electron from a neutral atom of an element
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electronegativity
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a measure of the ability of an atom in a chemical coumpound to attract electrons
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atomic radius
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one half the distance between the nuclei of identical atoms that are bonded together
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dipole moment
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a measure of the strength of a dipole.
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dipole
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equal but opposite charges that are seperated by a short distance
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sheilding effect
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how electrons in an atom interact with each other
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halogens
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group 17, extremely reactive non metals
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noble gases
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group 18, non reactive gases
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alkali metals
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group 1, extremely reactive metals
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alkaline earth metals
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group 2, less reactive metals
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transition metals
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group 3-12, various charges
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semi-metals
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share the properties of metals and non metals.
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lanthanides, actinides
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radioactive, multi valent, many are man-made
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