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The Periodic Table Review . Who is Mendeleev? How did Mendeleev organize the periodic table?. A. Dmitri Mendeleev. Dmitri Mendeleev (1869, Russian). Organized elements by increasing atomic mass . Predicted the existence of undiscovered elements. The Periodic Table . Who is Mosely?

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the periodic table review

The Periodic TableReview

Who is Mendeleev?

How did Mendeleev organize the periodic table?

a dmitri mendeleev
A. Dmitri Mendeleev
  • Dmitri Mendeleev (1869, Russian)
  • Organized elements by increasing atomic mass.
  • Predicted the existence of undiscovered elements.
the periodic table

The Periodic Table

Who is Mosely?

How did Mosely organize the periodic table?

b henry mosely
B. Henry Mosely
  • Henry Mosely (1913, British)
  • Organized elements by increasing
  • Fixed problems in Mendeleev’s arrangement.

atomic number

the periodic table6

The Periodic Table

On the periodic table where are the metals located?

a metallic character
A. Metallic Character

Metals found on the left

  • Metals
  • Nonmetals
  • Metalloids
the periodic table8

The Periodic Table

Where are the non-metals?

a metallic character9
A. Metallic Character

Nonmetals are on the right

  • Metals
  • Nonmetals
  • Metalloids
the periodic table10

The Periodic Table

Where are the metalloids ?

a metallic character12
A. Metallic Character
  • Metals
  • Nonmetals
  • Metalloids
the periodic table13

The Periodic Table

Where are the representative elements ?

b table sections
B. Table Sections
  • Representative Elements
  • Transition Metals
  • Inner Transition Metals
the periodic table15

The Periodic Table

Where are the transition metals?

b table sections16
B. Table Sections
  • Representative Elements
  • Transition Metals
  • Inner Transition Metals
b table sections17
B. Table Sections
  • Representative Elements
  • Transition Metals
  • Inner Transition Metals
columns rows
Columns & Rows
  • Group (Family)
  • Period
the periodic table19

The Periodic Table

Periodic Trends

slide20
A. Terms
  • Periodic Law
  • Properties of elements repeat periodically when the elements are arranged by increasing atomic number.
a terms
A. Terms
  • Valence Electrons
    • e- in the outermost energy level
b periodic trends
1A

8A

2A

3A 4A 5A 6A 7A

B. Periodic Trends
  • Group # = # of valence e- (except He)
    • Families have similar reactivity.
  • Period # = # of energy levels
c dot diagrams
C. Dot Diagrams
  • Dots represent the valence e-.
  • EX: Sodium
  • EX: Chlorine
ad