Lecture Notes 9

4 sharing of one or more pairs of electrons between

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Unformatted text preview: d LiF LiCl LiBr LiI NaCl NaBr NaI KCl KBr KI MgCl2 Na2 O MgO GChem I ◦ Lattice energy ( kJ/mol) Melting Point ( C) 1017 828 787 732 788 736 686 699 689 632 2527 2570 3890 845 610 550 450 801 750 662 772 735 680 714 Sub (1275) 2800 9.4 sharing of one or more pair(s) of electrons between atoms = O covalent bond H . . . . . . . . . . . . . . H ... ... ... ... ... ... ... ... . O . . . . . . . . . . . . . . ... ... ... ... ... ... ... ... . . . . . . . . . . . . . . . . H transfer (ionic bond) or sharing (covalent bond) −→ each atom achieves an especially stable electron configuration, often a no2 6 ble.....gas. configuration ns np.......:......octet ............. ............. ............. ............. . . ...... ..... .. ........ .. ........ H C O C water . . . . . . . . . . . . . . . . H Lewis symbol: chemical symbol (=nucleus + core electrons) + ·· · dots for valence· Cl · electrons · Si · · · example: ·· H · · Si · · Si [Ne]3s 2 3p 2 acetic acid Lewis symbols...
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