Part IV
New Area of Focus: Periodic Table of New Area of Focus: Periodic Table of the Elements.the Elements.
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
• Questions– Which were missing? How do you know?
Copyright © 2010 Ryan P. Murphy
• Questions– Which were missing? How do you know?– How is the periodic table similar to the
arrangements of cards?
Copyright © 2010 Ryan P. Murphy
• Questions– Which were missing? How do you know?– How is the periodic table similar to the
arrangements of cards?
Copyright © 2010 Ryan P. Murphy
• Questions– Which were missing? How do you know?
Copyright © 2010 Ryan P. Murphy
• Questions– Which were missing? How do you know?– 5, J, 2, 6, 7, 7, J, 3
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– The Periodic Table increases in amu from left to right.
– Rows show the same number of valence E-
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• Answer! – The Periodic Table increases in amu from left
to right.– Columns show the same number of valence
Electrons
Copyright © 2010 Ryan P. Murphy
• Answer! – The Periodic Table increases in amu from left
to right.– Columns show the same number of valence
E-
Copyright © 2010 Ryan P. Murphy
The table puts elements into groups The table puts elements into groups with similar characteristics.with similar characteristics.
Copyright © 2010 Ryan P. Murphy
The table puts elements into groups The table puts elements into groups with similar characteristics.with similar characteristics.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
Copyright © 2010 Ryan P. Murphy
• All of the elements in a period have the same number of atomic orbitals.
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• All of the elements in a period have the same number of atomic orbitals.
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• All of the elements in a period have the same number of atomic orbitals.
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Valence Electrons
• The number of electrons in the outer shell of an atom
• Hydrogen has one valence electron; its in the Alkali Metal Family
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• Hydrogen has one valence electron; its in the Alkali Metal Family
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• Hydrogen has one valence electron; its in the Alkali Metal Family
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• All other elements in this family, Li, Na, K, Rb, and Cs, also have only one valence electron.
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• Fluorine has seven valence electrons
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• This places it in the halogen family
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Pronounce the names of all the elements on the Periodic Table. You have 1 minute and 25 seconds! Go!
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• Video song! Tom Lehrers (1:25 seconds)
• http://www.youtube.com/watch?v=DYW50F42ss8
• Video song! Tom Lehrers
• http://www.youtube.com/watch?v=nHUo0lG8Gi0
Horizontal row is called Period Horizontal row is called Period
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Horizontal row is called Period Horizontal row is called Period (Same # of electron orbitals)(Same # of electron orbitals)
Copyright © 2010 Ryan P. Murphy
Horizontal row is called Period Horizontal row is called Period (Same # of electron orbitals)(Same # of electron orbitals)
Vertical column is called group/family. Vertical column is called group/family.
Copyright © 2010 Ryan P. Murphy
Horizontal row is called Period Horizontal row is called Period (Same # of electron orbitals)(Same # of electron orbitals)
Vertical column is called group/family. Vertical column is called group/family. (Same # of valence electrons) (Same # of valence electrons)
Copyright © 2010 Ryan P. Murphy
Horizontal row is called Period Horizontal row is called Period (Same # of electron orbitals)(Same # of electron orbitals)
Vertical column is called group/family. Vertical column is called group/family. (Same # of valence electrons) (Same # of valence electrons)
Copyright © 2010 Ryan P. Murphy
• Is the circled area a period or group on the periodic table?
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• Is the circled area a period or group on the periodic table? Answer: Group
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• Is the circled area a period or group on the periodic table? Answer: Group
Copyright © 2010 Ryan P. Murphy
• Is the circled area a period or group on the periodic table? Answer: Group
Copyright © 2010 Ryan P. Murphy
AMU increases from left to right and AMU increases from left to right and top to bottom.top to bottom.
Copyright © 2010 Ryan P. Murphy
AMU increases from left to right and AMU increases from left to right and top to bottom.top to bottom.
Copyright © 2010 Ryan P. Murphy