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Chemical Bonds What is Chemical Bond Q1: What is a compound? Q2: How are compounds classified? Q3: Why atoms like to be together? Ionic Bonds Q1: What is an ionic compound? Q2: What are the representative properties of ionic compound? Lattice energy Ionic radii, Lattice array, and Crystal structure Bohn-Haber cycle Covalent Bonds Q1: What is a covalent bond? Q2: What compounds are formed with covalent bond? Molecular compounds and network compounds Localized electron-sharing model Bond Energy Bond strength and bond length Covalent radii Dipole moment and Polar bonds Multiple bonds:-bond, -bond, etc. Resonance and Electron delocalization Lewis Structure Q1: Why Lewis symbol is much favored? Duet and Octet rule Lewis structure versus Molecular geometry for Polyatomic compounds Resonance structure and formal charge Dative bond Q2: When does Lewis structure not work? Radical species Expanded valence shells Q3: Are compounds always well defined in terms of artificial classification? Compounds of Group 13 elements 1