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Ch. 10 - The Periodic Table

A. Dmitri Mendeleev. Dmitri Mendeleev (1869, Russian). Organized elements by increasing atomic mass.Predicted the existence of undiscovered elements.. B. Henry Mosely. Henry Mosely (1913, British). Organized elements by increasing atomic number.Fixed problems in Mendeleev's arrangement.. Ch. 10 -

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Ch. 10 - The Periodic Table

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    1. Ch. 10 - The Periodic Table I. History of the Periodic Table (p.284-285) Mendeleev Mosely

    2. A. Dmitri Mendeleev Dmitri Mendeleev (1869, Russian)

    3. B. Henry Mosely Henry Mosely (1913, British)

    4. Ch. 10 - The Periodic Table II. Organization (p.286-291) Metallic Character Rows & Columns Table Sections

    5. A. Metallic Character Metals Nonmetals Metalloids

    6. B. Table Sections Representative Elements Transition Metals Inner Transition Metals

    7. B. Table Sections

    8. C. Columns & Rows Group (Family) Period

    9. Ch. 10 - The Periodic Table III. Periodic Trends (p.288-291) Terms Periodic Trends Dot Diagrams

    10. Periodic Law

    11. A. Terms Valence Electrons e- in the outermost energy level Atomic Radius

    12. B. Periodic Trends Atomic Radius

    13. B. Periodic Trends First Ionization Energy

    14. B. Periodic Trends Which atom has the larger radius?

    15. B. Periodic Trends Which atom has the higher 1st I.E.?

    16. B. Periodic Trends Group # = # of valence e- (except He) Families have similar reactivity. Period # = # of energy levels

    17. C. Dot Diagrams Dots represent the valence e-. EX: Sodium

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