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Periodic Table

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Periodic Table

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    1. Periodic Table Groups and Periods Special Groups

    2. Periodic Table A chart of the elements Group/Family: - vertical column (18) - elements are listed with others having similar properties Period - horizontal rows (7) - elements having the same number of energy levels

    4. Periodic Battleship What element is found at�? Group Period Element 14 3 2 1 9 6 What Group and Period is the element in? Element Group Period Ni F

    6. Atomic Number The atomic number of an element is always the number of protons found in the atom The number of protons defines the element!

    7. Atoms #protons = #electrons Positive charge = negative charge Atoms are always neutral !!!!!!!!!

    8. Average Atomic Mass The average weight of the atom masses is found on the periodic table

    9. Early Periodic Trends The middle element had a weight that was the average of the other two.

    10. Early Periodic Trends Arranged elements by atomic weights Found repetition in properties in every eighth element

    11. Early Periodic Trends

    12. Early Periodic Trends Mendeleev was given credit for the format of the modern periodic table

    13. Modern Periodic Table Moseley was able to determine the number of protons in each atom Rearranging the table in order of atomic number instead of atomic mass removed inconsistencies in properties

    14. Periodic Law The properties of the elements are a function of their atomic numbers. This means that the placement of the element in the periodic table depends on its atomic number AND Its properties can be predicted based on this placement

    15. Noble Gases

    16. Noble Gases Nonreactive due to the full outer energy level (*8 e-�s) Octet rule = ALL atoms �want� eight outer e-�s

    17. Halogens MOST reactive nonmetals Gaining 1 e- would give octet

    18. Alkali Metals Most reactive metals Losing 1 e- would give octet

    19. Being Noble How many electrons do the following elements need to lose/gain to be noble? Element Lose/Gain? #e- Li O P Al

    20. Representative Elements Representative Elements are found in groups: 1, 2, 13-18 These elements �represent� the elements that have 1-8 outer (valence) electrons

    21. Transition Metals Transition metals are found in groups 3-12

    22. Transition Metals Colorful solutions are often produced when compounds containing transition metals are dissolved in water.

    23. Inner Transition Metals Lanthanides Actinides

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