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Bellringer

Bellringer. Write the electron configuration, orbital notation, and electron dot structure for both Na and Cl:. Chemical Bonds and Ionic Bonds Formation. Objectives: AHSGE Reading 4.3 Discern organizational patterns. 6.1 Predicting ionic and covalent bond types

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Bellringer

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  1. Bellringer • Write the electron configuration, orbital notation, and electron dot structure for both Na and Cl:

  2. Chemical Bonds and Ionic Bonds Formation Objectives: AHSGE Reading 4.3 Discern organizational patterns. 6.1 Predicting ionic and covalent bond types 6.2 Assigning oxidation numbers for individual atoms of monatomic and polyatomic ions

  3. Complete the Table

  4. Important Vocabulary Terms • Chemical bond: the force that holds 2 atoms together • May be formed by the attraction b/t a (+) nucleus and (-) electrons or (+) and (-) ions • Cation: a positively charged ion • Anion: a negatively charged ion • Ionic bond: the electrostatic force that holds oppositely charged particles together in an ionic compound • Oxides – metal + oxygen • Salts

  5. Formation of Ions • Positive ions are formed when atoms _________ electrons. • Which groups would be most likely to lose (or give up) electrons? Answer: 1A, 2A, 3A, and sometimes 4A • How are negative ions formed? Answer: when atoms gain electrons • Which groups would be most likely to gain electrons? Answers: 5A, 6A, 7A, and sometimes 4A

  6. Oxidation Numbers • How many electrons would atoms of elements in each group lose or give up? • 1A = • 2A = • 3A = • 4A = Answers: 1, 2, 3, and 4, respectively

  7. Oxidation Numbers(continued) • If atoms give up the following number of electrons, what would their charge be: • 1 electron • 2 electrons • 3 electrons • 4 electrons Answers: +1, +2, +3, and +4, respectively

  8. Oxidation Numbers(continued) • How many electrons would atoms of elements in each group gain? • 5A = • 6A = • 7A = • 4A = Answers: 3, 2, 1, and 4, respectively

  9. Oxidation Numbers(continued) • If atoms gain the following number of electrons, what would their charge be: • 1 electron • 2 electrons • 3 electrons • 4 electrons Answers: -1, -2, -3, and -4, respectively

  10. Oxidation Numbers(continued) • Why is group 4A listed as gaining 4 electrons OR losing 4 electrons? • The charge on an ion is called its oxidation number. • Knowing this now, go back to your table at the beginning of your notes and fill in the oxidation number column. • What do you think the oxidation number will be for group 4A?

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