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Chapter 14 Periodic Table

Chapter 14 Periodic Table. Classification of Elements Periodic Trends. Classification of Elements. Dmitri Mendeleev (1871) first to organize the Periodic table well. Electron configurations are very important in organizing the Periodic Table

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Chapter 14 Periodic Table

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  1. Chapter 14 Periodic Table • Classification of Elements • Periodic Trends

  2. Classification of Elements • Dmitri Mendeleev (1871) first to organize the Periodic table well.

  3. Electron configurations are very important in organizing the Periodic Table • All elements in the same group have the same valence electron configuration

  4. Mendeleev Periodic Table 1871

  5. Electron Configuration of Groups • Noble Gases – outermost s and p orbitals filled • Akali Metals – outermost s has one electron • Alkaline Earth Metals - outermost s has two electron (filled) • Halogens – Outermost s filled, outer most p has 5 electrons

  6. Electron Configuration of Groups • Transition Metals – Outermost s filled, d ranges from one to ten electrons

  7. Electron Configuration of Groups • Describe each of the following in terms of valence electrons: • Group 13 • Group 14 • Group 15 • Group 16

  8. Periodic Trends

  9. Periodic Trends • Atomic Radius • Increases as you move down a group • Decreases as you move from left to right across a period

  10. Periodic Trends • Ionization Energy • Generally increases across a period • Generally decreases down a group

  11. Periodic Trends • Electronegativity • Decreases as you move down a group • Increases as you move from left to right across a period

  12. Periodic Trends • Ionic Size • Increases as you move down a group • Cations decrease as you move from left to right across a period • Anions increase as you move from left to right across a period

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