1. PERIODICTABLE

2. I. History of Periodic Table

3. 1790’s Antoine Lavoisier French chemist French chemist compiled a list of 23 elements. compiled a list of 23 elements.

4. Early-Mid 1800’s Invention of electricity allowed breakdown of compounds, causing drastic increase in number of identified elements. Invention of electricity allowed breakdown of compounds, causing drastic increase in number of identified elements.

5. Industrial Revolution fueled development of chemistry-based industry Industrial Revolution fueled development of chemistry-based industry

6. In 1860, chemists agreed on a method of accurately determining atomic mass, so elements could be identified by this method. In 1860, chemists agreed on a method of accurately determining atomic mass, so elements could be identified by this method.

7. By 1860’s, about 70 elements had been discovered. By 1860’s, about 70 elements had been discovered.

8. John Newlands English chemist English chemist Arranged elements by increasing mass in 1864 Arranged elements by increasing mass in 1864 Found properties repeated every 8 th element Found properties repeated every 8 th element “Law of Octaves” “Law of Octaves”

9. Dimitri Mendeleev  Russian chemist  First to publish PT. His version published in 1869  Used vertical columns to list by increasing atomic mass, and horizontal rows to arrange by similar traits (opposite of today).

10. Predicted that new elements would later be discovered that would fit into the “blank spaces” in his periodic table. Predicted that new elements would later be discovered that would fit into the “blank spaces” in his periodic table.

12. Henry Moseley British physicist. British physicist. Discovered nuclear charge (protons). Discovered nuclear charge (protons). Arranged P.T. by increasing atomic number. Arranged P.T. by increasing atomic number.

13. The Modern Table

14. Arranged in horizontal rows by increasing atomic number.

15. Periodic Law: The physical and chemical properties of the elements are a periodic function of their atomic numbers (periodic = repeating) Periodic Law: The physical and chemical properties of the elements are a periodic function of their atomic numbers (periodic = repeating).

16. II. Organization of the Periodic Table

17. Kr Xe Rn Ar Ne He CaKScTiVCr Mn FeCoNiCuZnGaGeAsSeBrKr Periods: the horizontal rows Groups: the vertical columns (sometimes called families)

18. Physical State (phase) at Room Temperature *On classroom periodic table: BLACK = solid BLUE = liquid RED = gas CLEAR = man-made

19. H LiBe NaMg CaK Rb Cs FrRa Ba Sr ScTiVCr Mn FeCoNiCuZnGaGeAsSeBrKr XeITeSbSnInCdAgPdRhRuTcMoNbZrY La AcRf HfTaWReOsIrPtAuHgTlPbBiPoAtRn DbSgBhHsMt LuYbTmErHoDyTbGdEuSmPmNdPrCe ThPaUNpPuAmCmBkCfEs Fm MdNoLr Ar Ne He F ClSPSiAl BCNO 1A 2A 3B4B5B6B 7B8B 1B2B 3A4A5A6A7A 8A Metals, Non-Metals, & Metalloids

20. Metals All elements to the left of the “stairstep” (except Hydrogen) All elements to the left of the “stairstep” (except Hydrogen) The most important characteristic of metals is the tendency to lose electrons and form positive ions. The most important characteristic of metals is the tendency to lose electrons and form positive ions.

21. Non-Metals All elements to the right of the “stairstep” (and hydrogen) All elements to the right of the “stairstep” (and hydrogen) Most important characteristic of nonmetals is the tendency to gain electrons and form negative ions. Most important characteristic of nonmetals is the tendency to gain electrons and form negative ions.

22. Metalloids (Semi-metals) Have at least one side touching “stairstep” Have at least one side touching “stairstep” Exception: Aluminum Exception: Aluminum Properties of both metals and non-metals Properties of both metals and non-metals

23. H LiBe NaMg CaK Rb Cs FrRa Ba Sr ScTiVCr Mn FeCoNiCuZnGaGeAsSeBrKr XeITeSbSnInCdAgPdRhRuTcMoNbZrY La AcRf HfTaWReOsIrPtAuHgTlPbBiPoAtRn DbSgBhHsMt LuYbTmErHoDyTbGdEuSmPmNdPrCe ThPaUNpPuAmCmBkCfEs Fm MdNoLr Ar Ne He F ClSPSiAl BCNO 1A 2A 3B4B5B6B 7B8B 1B2B 3A4A5A6A7A 8A Metals, Non-Metals, & Metalloids

24. s & p blocks

25. d block

26. f block

27. f block f block

28. and do today’s HW