12 Nov. Chemistry

12 Nov. Chemistry - • Charactering Bonds Greater...

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Chemistry Ch. 8 Ionic Bonding electrons are transferred Metal react w/ nonmetals ions paired have lower energy (greater stability) than separated ions Types of Chemical Bonds Electrons are share by nuclei is called covalent bonding. Covalent Bond length the energy where the energy is minimal is called the bond length. The zero point of energy is defined with the atoms at infinite  separation. Non-polar covalent bond H2, F2, O2, Cl2, Br2, O3,… Polar Covalent bond H-F, H-Cl, C=O, O=C=O,… Coulomb’s Law (Ionic Bond Energy) 8.2 Electronegativity     is the ability of an atom in a molecule to attract shared  electrons to itself. Trends Electronegativity increases across a period. o Electronegativity decreases down to a group.
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Unformatted text preview: • Charactering Bonds: Greater electronegativity difference means less covalent character and greater ionic character. o Any compound that conducts an electronic current when melt is an ionic compound. • 8.3 Bond Polarity and Dipole Moments Dipolar molecules molecules with a somewhat negative end and a somewhat positive end. Molecules with preferential orientation in an electric field. o Dipole moment is defined as the product magnitude of charge on the atoms and the distance between the two bonded atoms. • Polar Bonds & Polar Molecules Molecules can have polar bonds but no dipole moment. 8.4 Ions: Electrons Configurations and Sizes Noble Gas Electron Configurations...
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12 Nov. Chemistry - • Charactering Bonds Greater...

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