Chapter 5 The Periodic Table

Chapter 5 The Periodic Table
5.3 Repersentative Groups Page 139-145
Valance Electrons
Definition: An electron that is in the highest occupied energy level of an atom.
Alkali Metals
Defintion: The elements that are located in group 1A of the periodic table. This does not in could Hydrogen.
Alkaline Earth Metals
Definition: The elements in Group 2A of the periodic table.
Definition: The elements in Group 7A of the periodic table.
Noble Gases
Definition: The elements Group 8A of the periodic table.
Elements In the Table
Alkali Metals
Lithium (Li)
Atomic Number 3
Soduim (Na)
Atomic Number 11
Potassium (K)
Atomic Number 19
Rubidium (Rb)
Atomic Number 37
Cesium (Cs)
Atomic Number 55
Atomic Number 87
Alkialine Metals
Beryllium (Be)
Atomic Number 4
Boron Family
Boron (B)
Atomic Number 5
Aluminum (Al)
Atomic Number 13
Gallium (Ga)
Atomic Number 31
Atomic Number 49
Thallium (Tl)
Atomic Number 81
The oxygen family
Atomic number 8
Atomic number 34
Atomic number 16
Carbon Family
Carbon (C)
Atomic Number 6
Silicon (S)
Atomic Number 14
Germanium (Ge)
Atomic Number 32
Tin (Sn)
Atomic Number 50
Lead (Pb)
Atomic Number 82
Nitrogen Family
Nitrogen (N)
Atomic Number 7
Phosphorus (P)
Atomic Number 15
Arsenic (As)
Atomic Number 33
Antimony (As)
Atomic Number 51
Bismuth (Bi)
Atomic Number 83
5.2 The Modern Periodic Table-Pg 130-138
Definition: Each row in the table of elements.
Definition: Each column on the Periodic Table.
Periodic Law
Definition: The pattern of repeating properties.
Atomic Mass Unit (amu)
Definition: Elements that are good conductors of electric current and heat.
Transition Metals
Definition: elements that form a bridge between the elements on the left and the right sides of the table.
Definition: Elements that are poor conductors of heat and electric current.
Definition: Elements with properties that fall between those of metals and nonmetals.
Link to a "picture" periodic table.
5.1 Organizing the elements-Pg 126-129
Periodic Table
Definition: An arrangement of elements in columns, based on a set of properties that repeat from row to row.
Elements are classified as: Metals, Nonmetals, and metalloids.
Mendleev's Periodic table
Mendleev used basic playing card to show he periodic table. he put the cards in order from ace to king and by suites. He labled each card with an element to show the periodis table.
Mendleev's Proposal
Mendleev's arranged the elements into rows in order of the increasing mass so that elements with similar properties were in the same column. The final arrangement was similar to winning a arrangment in solitare exepct the columns were organized by properties instead of suites.
Mendleev's Prediction
Mendleev could not finish his periodic table because many of the elements that we have today were never discovered. He left many spaces in his table so he had room for the elements to be discovered.
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