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Chemistry Unit 3

TermDefinition
Mendeleev organized periodic table by atomic mass
Mosely organized periodic table by increasing atomic number
Metals located on left of zig-zag line except hydrogen
Nonmetals located on right of line
Metalloids touch line except Al and Po which are both metals
Alkai Metals Column 1 (vertical) S-block
Alkaline Earth Metals Column 2 (vertical) S-block
Transitions Metals Columns 3-12 (vertical) D-block
Halogens Column 17 (vertical) P-block
Noble Gases Column 18 (vertical) P-block
Lanthanides #'s 58-71 F-block
Actinides #'s 90-103 F-block
Inert stable/non-reactive
Atomic Size Distance from nucleus edge. Increases as you go down and gains energy level. Decreases from left to right. Increases #of protons
Ionization Energy Increases from left to right and decreases going down.
Electronegativity Attracting electrons. Increases from left to right. Decreases from top to bottom b/c atom gets bigger.
Created by: NaudiaConradi
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