Quiz #4 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Electronegativity | The ability oif an atom to attract electrons in a covalent bond. Dependent upon: charge on nucleus, distance of outer shell electrons form the nucleus, and amount of shielding from inner shell electrons.
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| Pauling Scale | Cesium is lowest at 0.7 and Flourine is highest at 4.0 (Nobel Gases are exempt)
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| Non-polar Covalent Bond | A bond in which the electrons are attracted equally by two atoms, both atoms have the same electronegativity.
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| Polar Covalent Bond | A bond in which the electrons are attracted mopre strongly by one atom than the other. Sets up an uneven charge distribution in the bond, atoms have different electronegattivities.
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| Dipole | A molecule that is electrically unsymmetrical causing it to be oppositely charged at two points. Only applies to covalently bonded atoms.
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| Polar Molecule | A molecule is said to be polar if its centers of negative and positive charge do not coincide.
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| A covalent bond between two atoms of different electronegativity is . . . | always polar.
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| A covalent bond between two atoms of identical electronegativity is always . . . | non-polar.
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| A molecule is non-polar if . . . | the sum of the vectors representing bond polarity is zero.
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| A molecule is polare if . . . | the sum of the vectors representing bond polarity is not zero.
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Created by:
bilsky22
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