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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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