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15 Cards in this Set
- Front
- Back
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Credited as the father of the periodic table (also predicted unknown elements)
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Dimitri Mendeleev (Lothar Meyer too)
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The Original Periodic Law states that...
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The physical and chemical properties of elements are the periodic functions of their atomic weights.
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Developed the concept of the atomic number.
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Henry Moseley
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The Modern Periodic Law states that...
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The physical and chemical properties of the elements are periodic functions of their atomic number.
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Vertical arrangements of elements in the periodic table are called...
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Groups or Families
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Main group elements are represented by the letter...
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A
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Transition elements are represented by the letter...
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B
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Elements in the same group have the same number of
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valence electrons
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electrons in the outermost energy level that are involved in chemical bonding are called...
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valence electrons
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A filled outermost energy level is called a...
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noble gas electron arrangement.
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Name these groups:
Group IA, Group IIA, Group VIA, Group VIIA, Group VIIIA |
(IA) Alkali metals, (IIA) Alkaline Earth metals, (VIA) Chalcogens, (VIIA) Halogens, (VIIIA) Noble (inert) gases
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The Octet Rule states that...
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Main group elements tend to gain(non-metal), lose(metals), or share(non-metals) electrons to achieve 8 valence electrons in their outermost energy level.
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Horizontal arrangements of elements in the periodic table are called...
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Periods or Series
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4 Properties of Metals are...
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-Elements to the left of the "zig zag" line of the periodic table
-Generally solids at room temp and pressure -Tend to give up electrons -Good conductors of heat and electricity, have er, and are malleable and ductile. |
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4 Properties of Non-metals are...
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-located to the right ofd the staircase
-variety of states and at room temp and pressure...many gases -tend to gain or share electrons -Properties opposite of metals (poor conductors, dull, brittle) |
