1. Ch. 6 - The Periodic Table
I. History
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2. A. Mendeleev Dmitri Mendeleev (1869, Russian)
Organized elements by increasing atomic mass.
Elements with similar properties were grouped together.
There were some discrepancies.
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3. A. Mendeleev Dmitri Mendeleev (1869, Russian)
Predicted properties of undiscovered elements.
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4. B. Moseley Henry Mosely (1913, British)
Organized elements by increasing atomic number.
Resolved discrepancies in Mendeleev’s arrangement.
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5. II. Organization of the Elements
Ch. 6 - The Periodic Table
II. Organization of the Elements
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6. A. Metallic Character
Metals
Nonmetals
Metalloids
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8. B. Blocks Main Group Elements Transition Metals
Inner Transition Metals
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