Periodic Table Of
Elements
Page 78 – 79 of Text book
Periodic (repeating) Table
Demitri Mendeleev: Father of the Periodic Table
Elements are arranged
according to chemical
properties and increasing
atomic number (# of protons)
Periods
Horizontal rows
7 total periods
Tells the number of energy
levels (shells) in each atom
Families (groups)
Vertical columns (18 total)
8 families and the
Transition Elements
Tells the number of valence
electrons (except Transitions)
Valence electrons =
electrons in outer shell
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1 |
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4 |
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11 |
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12 |
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14 |
15 |
16 |
17 |
18 |
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P1 |
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P2 |
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F |
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P3 |
4 |
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2 |
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8 |
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P4 |
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5 |
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3 |
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7 |
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P5 |
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6 |
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1 |
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P6 |
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P7 |
Fr |
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The Numbers on this table are
explained below!
Read pages 86-94 in textbook
Click
Here for a cool Periodic Table on the internet
1. Metals: left of the
staircase (pgs.
87)
Conduct electricity,
metallic luster, malleable (bendable)
Most reactive metal: Francium, Fr
2. Nonmetals: right of the
staircase (page
91)
Poor conductors, dull, break
or gas at room temperature
Most reactive nonmetal:
Fluorine, F
3.
Metalloids/Semiconductors: nonmetals that conduct (page
93)
4. Alkali Metal Family (page 87)
Family 1 (1 valence
electron)
Soft silvery metal
Very reactive, form +1 ions,
why?
5. Alkaline Earth Metal
Family (page 88)
Family 2 (2 valence
electrons)
Not as reactive as Alkali
Metals, from +2 ions, why?
6. Transition Metals (page 89)
Valence electrons vary,
depends on the molecule
7. Halogen Family (page 92)
Family 17 (7 valence
electrons)
Very reactive, forms –1
ions, why?
8. Noble Gases (page 93)
Family 18 (8 valence
electrons, except Helium has 2)
Very inert, not reactive at
all, why?
9. Lanthanides and Actinides
Each fits in one small box