CHM 1033 Lecture Notes - Lecture 3: Vsepr Theory, Trigonal Planar Molecular Geometry, Ionic Compound
Document Summary
Ionic compound composed of metal cations and nonmetal anions held together by electrostatic attraction. , cd2+, and ag+ form two or more positive ions (cations) We use a roman numeral to identify ionic charge. Covalent compounds form: (cid:449)he(cid:374) ato(cid:373)s share ele(cid:272)t(cid:396)o(cid:374)s to (cid:272)o(cid:373)plete o(cid:272)tets, (cid:271)et(cid:449)ee(cid:374) non-metal atoms from groups 4a, 5a, 6a, and 7a, g(cid:396)eatest (cid:448)a(cid:396)iety of (cid:272)o(cid:373)pou(cid:374)ds, co(cid:448)ale(cid:374)t (cid:373)ole(cid:272)ules (cid:272)a(cid:374) (cid:271)e fou(cid:374)d i(cid:374) all th(cid:396)ee states of matter at room temperature. Single covalent bond: a sha(cid:396)ed pai(cid:396) of ele(cid:272)t(cid:396)o(cid:374)s the bond length, opti(cid:373)u(cid:373) dista(cid:374)(cid:272)e (cid:271)et(cid:449)ee(cid:374) the (cid:374)u(cid:272)lei = molecular formula. Shows the symbol of each atom type in alphabetical order, followed by a subscript indicating the number of atoms of each type. Cannot be altered without changing the identity of the compound. A double covalent bond: o(cid:272)(cid:272)u(cid:396)s (cid:449)he(cid:374) ato(cid:373)s sha(cid:396)e t(cid:449)o (cid:894)(cid:1006)(cid:895) pai(cid:396)s of ele(cid:272)t(cid:396)o(cid:374)s, fo(cid:396)(cid:373)s when there are not enough electrons to complete octets.
