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Unit 6 Chemistry
Term | Definition |
---|---|
Periods | Each row in the periodic table. |
Periods | All the elements in a period have the same number of atomic orbitals. |
Periods | At this time there is a maximum of seven electron orbitals |
Families/Groups | Each vertical column in the periodic table. |
Families/Groups | The elements in each group have the same number of electrons in the outer orbital. |
valence electrons. | These outer electrons are called |
Alkali metals | are the chemical elements found in Group 1 of the periodic table and have only one electron in their outer shell. |
Alkaline Earth metals | are metallic elements found in the second group of the periodic table |
Transition metals | the 38 elements in groups 3 through 12 of the periodic table. |
Transition metals | They are the metallic elements that serve as a bridge, or transition, between the two sides of the table. |
Metalloids | are the elements found along the stair-step line that distinguishes metals from non-metals. |
Metalloids | share some of the properties of metals and some of the properties of nonmetals. |
Other metals | the 7 elements are located in groups 13, 14, and 15. |
Halogens | five non-metallic elements found in group 17 of the periodic table. |
The term "halogen" | means "salt-former" and compounds containing halogens are called "salts" |
Noble gases | are the chemical elements in group 18 of the periodic table. |
Noble gases | They are the most stable due to having the maximum number of valence electrons |
Rare earth | thirty rare earth elements are composed of the lanthanide and actinide series |