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15 Cards in this Set

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Credited as the father of the periodic table (also predicted unknown elements)
Dimitri Mendeleev (Lothar Meyer too)
The Original Periodic Law states that...
The physical and chemical properties of elements are the periodic functions of their atomic weights.
Developed the concept of the atomic number.
Henry Moseley
The Modern Periodic Law states that...
The physical and chemical properties of the elements are periodic functions of their atomic number.
Vertical arrangements of elements in the periodic table are called...
Groups or Families
Main group elements are represented by the letter...
A
Transition elements are represented by the letter...
B
Elements in the same group have the same number of
valence electrons
electrons in the outermost energy level that are involved in chemical bonding are called...
valence electrons
A filled outermost energy level is called a...
noble gas electron arrangement.
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
The Octet Rule states that...
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.
Horizontal arrangements of elements in the periodic table are called...
Periods or Series
4 Properties of Metals are...
-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.
4 Properties of Non-metals are...
-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)