Types of Elements
Family Properties
Valence Electrons
History
Families
100
Found on the left
What is metals
100
Inert and don't form compounds
What is noble gases
100
Hydrogen
What is 1
100
First periodic table was aranged by increasing ____
What is atomic mass
100
Helium
What is noble gases
200
Form a staircase
What is metalloids
200
Most reactive metals
What is alkali metals
200
Neon
What is 8
200
Creator of the modern periodic table
What is Mendeleev
200
Potassium
What is alkali metals
300
Malleable and ductile
What is metals
300
Contains the greatest number of elements
What is transition metals
300
Calcium
What is 2
300
Elements that had ____ were put into rows.
What is similar properties
300
Iron
What is transition metals
400
Also called semiconductors
What is metalloids
400
Two at the bottom
What is lanthanides and actinides
400
Carbon
What is 4
400
The pattern of repeating properties displayed by elements on the periodic table
What is periodic law
400
chlorine
What is halogens
500
Can be solids, liquids, or gases at room temperature.
What is nonmetals
500
Form salts with alkali metals
What is halogens
500
Iodine
What is 7
500
Number of elements on first periodic table
What is 63
500
Uranium
What is actinides
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