Introduction to Bonding Chemical Bonding IV CHEMICAL BONDING
Introduction to Bonding Chemical Bonding IV
CHEMICAL BONDING Why bond? Atoms try to acquire particularly stable electron configuration for their outer electrons 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
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 bonds form in order to… decrease potential energy (PE) increase stability
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
Vocabulary CHEMICAL FORMULA IONIC Formula Unit Na. Cl COVALENT Molecular Formula CO 2
Vocabulary COMPOUND 2 elements more than 2 elements Binary Compound Ternary Compound Na. Cl Na. NO 3
Vocabulary ION 1 atom 2 or more atoms Monatomic Ion Polyatomic Ion + Na NO 3
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