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Chemical Bonding

Chemical Bonding. Introduction to Chemical Bonding. Introduction to Chemical Bonding. Objectives: Define chemical bond. Explain why most atoms form chemical bonds. Describe ionic and covalent bonding. Explain why most chemical bonding is neither purely covalent nor purely ionic.

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Chemical Bonding

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  1. Chemical Bonding Introduction to Chemical Bonding

  2. Introduction to Chemical Bonding Objectives: • Define chemical bond. • Explain why most atoms form chemical bonds. • Describe ionic and covalent bonding. • Explain why most chemical bonding is neither purely covalent nor purely ionic. • Classify bonding type according to electronegativity differences.

  3. Chemical Bonds What happens when two atoms get close together? What is a chemical bond? • An electrical attraction between nuclei and valence electrons of different atoms.

  4. Chemical Bonding F2 • Most atoms are found in nature as part of compounds. • Atoms gain, lose, or share electrons to achieve lower potential energy. F - 1s22s22p5 Li - 1s22s1 LiF

  5. Ionic and Covalent Bonding Ionic Bonding • Electrostatic attraction between cations and anions • Occurs as a result of the transfer of electrons from one atom to another. Covalent Bonding • Electrostatic attraction resulting from shared electron pairs between atoms.

  6. Electronegativity Differences Nonpolar covalent bond – bonding electrons are shared equally Polar Covalent bond – unequal sharing of bonded electrons

  7. Classifying Bonds

  8. Identify Bond Types KF O2 ICl HBr NaF N2 Ionic Nonpolar covalent Polar covalent Polar covalent Ionic Nonpolar covalent

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