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| Started by G Wilkinson with Ferrocene |
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| Horizontal Rows in Periodic Table: 7 |
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| Vertical Rows in Periodic Table: 18 |
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| Decreases Across Period, Increases Down Group |
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| Energy required to remove valence electron from atom. (Most positive toward top right) |
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| Energy released when electron is added to an atom. |
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| Ability of atoms to attract electrons |
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| Study of features of complex chemical species and organization through non covalent interactions. Van der Waals forces, pi pi interactions, hydrogen bonds, hydrophobic interactions. |
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| Determine physiochemical properties such as melting point and solubility. |
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| Van der Waals Interactions |
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| van der Waals interactions are the sum of attractive (dispersive) and repulsive forces. |
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| Result from hydrocarbons repelling when in water. |
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represented as XH…YZ, is an electrostatic interaction between an electropositive hydrogen atom and two electronegative atoms X and Y. |
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| Self Assemble through H bonds. |
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a structural unit in the supermolecule which can formed by intermolecular interactions |
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When the same chemical substance exhibits different crystal structures |
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| Cambridge Structural Database |
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Archive for all crystal structures that contain organic moieties (>560,000) |
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exhibit a regular repeating array of atoms, molecules or ions that extend in three dimensions |
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