Introduction to Bonding Chemical Bonding

What is a Chemical Bond? Attractive force between atoms or ions that binds them together as a unit The bond is caused by the electromagnetic force attraction between opposite charges May form by the attraction between a positive nucleus and a negative electrons or the attraction between a positive ion and a negative ion

CHEMICAL BONDING Why bond? Atoms try to acquire particularly stable electron configuration for their outer electrons (Increase stability)  form ions or molecules Most stable configuration for outer electrons is noble gas configuration (octet structure) Strategies to achieve more stable configuration: give away electrons accept electrons share electrons

Types of Bonds: Types of bonds: ionic bond covalent bond metallic bond

Strength of Chemical Bonds The strength of chemical bonds varies considerably "strong bonds" covalent or ionic bonds "weak bonds" dipole-dipole interactions and hydrogen bonding

CO2 NaCl Vocabulary CHEMICAL FORMULA IONIC COVALENT Formula Unit Molecular Formula CO2 NaCl

NaNO3 NaCl Vocabulary COMPOUND 2 elements more than 2 elements Binary Ternary Compound NaCl NaNO3

Na+ NO3- Vocabulary ION 1 atom 2 or more atoms Monatomic Polyatomic