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Cards In This Set
| Front | Back |
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Principle
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Molecular shapes show symmetryarranged in a regular pattern with equal distances separating the atoms that aren't bound together
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Why equal distances?
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Repulsion among valence electrons
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VSEPR
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Valence shell electron pair replusion
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Exceptions to the rule
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D-blocktransition metalsasymmetrical shapes
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5 most common shapes
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Lineartrigonal planartetrahedralpyramidalbent
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Hybrid orbitals
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Linear sptrigonal sp2tetrahedral sp3
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2 trends of bond length
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1. move down a group-bond length increases2. multiple bonds are shorter than single
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Dipole
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Two charged ends (battery)
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Properties of dipole
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1. align in an electric field2. attracted to a charged rod3. deflected by a magnetic field
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Large molecules
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Polar and nonpolar areaspolars attract and nonpolars attract creating twisting of shape
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Period associated with trigonal planar
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3A
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Period associated with tetrahedral
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4A
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Period associated with pyramidal
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5A
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Period associated with bent
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6A
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HF
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Polar
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