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Unformatted text preview: bonds, the shape of which is determined by geometry of valence orbitals. Key Concept 4: Electrons are shared by atoms joined by covalent bonds, allowing both to fill their orbitals. Key Concept 5: Unequal sharing of electrons is caused by asymmetric electronegativity, resulting in polar bonds and polar compounds that participate in hydrogen bonding. Key Concept 6: Ionic bonds involve stripping of electrons from one atom by another, which stay associated by charge interactions....
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- Fall '07