Chemical Bonding When two or more atoms join a bond is formed It will not fall apart unless enough energy is added to break the bond The type of bond determines certain properties of the compounds they create Why do atoms bond? Octet Rule: Atoms tend to gain, lose, or share electrons so as to have 8 electrons in their outermost shell (except for H and He) Types of Bonds There are three main types of bonds: Ionic Bond Covalent Bond Metallic Bond Learning Check: When two or more atoms join, a _________ forms. Bond How many electrons do most ...
Section 8.1 – Chemical Bonds, Lewis Symbols, and the Octet Rule • Whenever two atoms or ions are strongly attached to each other, we say there is a chemical bond between them. • There are three general types of chemical bonds: ionic, covalent, and metallic. Ionic Bond • An ionic bond is the electrostatic forces that exist between ions of opposite charge. • Ionic bonds normally occur between a metal and a nonmetal. Covalent Bond • A covalent bond results from the sharing of electrons between two atoms. • Covalent bonds normally occur between two or more nonmetals. Metallic ...
Chemical Bond A force that holds groups of 2 or more atoms together to make them function as a unit Why? Atoms form bonds to obtain a “noble gas configuration” Octet Rule- Atoms need to have 8 valence electrons Types of Bonds Metallic Bonds: specific only to metals Ionic: results from transfer of electrons Covalent: results from sharing of electrons Coordinate covalent bond: when one atom provides both electrons of the shared pair Metallic Bonding Occurs between like atoms of a metal in the free state Valence e- are mobile (move freely among all metal atoms) Positive ions in ...
Metallic Bonding • Chemical bonding is different in metals than it is in ionic, molecular, or covalent-network compounds. • The unique characteristics of metallic bonding gives metals their characteristic properties: • electrical conductivity • thermal conductivity • malleability (ability to be hammered or beaten into thin sheets) • ductility (ability to be drawn, pulled, or extruded through a small opening to produce a wire) • shiny appearance The Metallic Bond Model • In metals, the metal atoms lose their outer electrons to form metal cations. • In a metal, the vacant orbitals in the atoms’ outer energy levels overlap. &bull ...
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