CHEM 1E03 Midterm: Ch.10 (Section 2) Notes and Equations - Chemical Bonding

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CHEM 1E03 Full Course Notes
CHEM 1E03 Full Course Notes
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Chemical bonding: involves transfer or sharing of outer electrons, usually to acquire a stable configuration (lewis) Ionic bonding: involves transfer of outer valence electrons. Ionic solids: metal cations and non-metal anions arranged in 3d cubic lattice with strong electrostatic attraction. Typically, hard, brittle solids with high melting points dissolve in water to form solvated ions. Covalent bonding: sharing of electrons, often to attain an octet of electrons, also often between 2 non-metals. Coordinate covalent bond: one atom provides both (cid:1857) for a bond. Valence electrons are removed from atomic core. O(cid:448)erlappi(cid:374)g (cid:862)(cid:272)o(cid:374)du(cid:272)tio(cid:374) (cid:271)a(cid:374)d(cid:863) a(cid:374)d (cid:862)(cid:448)ale(cid:374)(cid:272)e (cid:271)a(cid:374)d(cid:863) (cid:862) ea of ele(cid:272)tro(cid:374)s(cid:863) Metals typically are solid, some with high melting points, shiny, mostly silvery, electrically conductive. Covalent molecules are held together by weaker intermolecular forces than ionic solids lo(cid:449)er (cid:373)elti(cid:374)g point/boiling point and lower aqueous solubility. Bond polarity: unequal sharing of (cid:1857) in a chemical bond between atoms. Percent ionic character of a bond involving a certain element decreases across a period.