8 Bonding Metallic & Ionic Bonding
Metallic Bonding Examples Pb Ag Au Cu Zn Fe Brass (Cu + Zn) Bronze (Cu + Sn) Stainless Steel (Fe + Cr + C)
Properties – Metals Good conductors of heat and electricity. Shiny and lustrous. Malleable and ductile.
Metallic Bonding Loosely held electrons shared by many metal atoms in a crystal lattice. Lattice of + ions in a “sea of electrons” Covalent bonding involves sharing, but only between two atoms at a time.
Ionic Bonding Examples NaCl KCl KI FeCl3 CaCO3 CaCl2 MgSO4 Fe2O3 AgNO3 + ion & - ion
Properties – Ionic Bonding Brittle High MP & BP Dissolves in H2O Conducts as (l), (aq), (g)
Electrical Conductivity
Ionic Bonding—Description Metal loses electron(s). [+ ion] Non-metal gains electron(s). [- ion] Ions attract and form crystal lattice.
Ionic Bonding