Pluchino –Regents Chemistry Bonding and Molecular Shape –02 Lewis Structures - Ionics Aim:How do we draw structural formulas? Do Now:How do ionic bonds form between atoms?Ionic BondsForm when one atom takes electron(s) away from another atom –transfer of electrons Occurs between metals and nonmetals (cations and anions) Ions are held together by attraction to form a compound Practice:Will the following substances form ionic bonds? 1. C and O 2. Sand Ca 3. Na and Br 4. N and H 5. Li and O 6. F and O 7. NH4+ and SO42-What electrons are most important when forming bonds? Valence electrons are most important in bonding…Can be shared or transferred Dictate how many bonds an atom “wants” to formLewis Dot Diagrams:1. Only show valence electrons 2. Do not pair electrons on a side until necessary
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