Chapter 5 Section 3 sun-bin.blogspot.com
Families
Hydrogen Hydrogen is in a family of its own It’s a nonmetal
Alkali Metals 1 valence electron They are shiny, light weight, have the consistency of clay and are easily cut with a knife React violently with water
Alkali Metals The most reactive metals Never found as free elements in nature. They are always bonded with another element
Alkaline Earth Metals 2 valence electrons Less reactive than alkali metals Harder, denser, stronger than alkali metals Alkali Metals and Alkaline Earth Metals Video
Transition Metals Complex arrangement of electrons Most are hard and dense Transition Metals Video
Boron Family 3 valence electrons Includes a metalloid (boron), and the rest are metals Includes the most abundant metal in the earth’s crust (aluminum) Boron Family Video
Carbon Family 4 valence electrons Form cations and anions Includes a non-metal (carbon), metalloids, and metals Carbon is the basis of all life
Nitrogen Family 5 valence electrons Includes non-metals, metalloids, and metals Share electrons when they bond
Oxygen Family 6 valence electrons Found in nature in both free and combined states
Halogens 7 valence electrons Most reactive non-metals Never found free in nature React with alkali metals to form salts Halogens Video oumetals.com
Noble Gases Colorless gases Extremely un-reactive Why are they extremely unreactive? Because their outermost energy level is full (stable) Also known as the Inert gases Found in small amounts in the earth's atmosphere Noble Gases Video
Rare Earth Elements The thirty rare earth elements are composed of the lanthanide and actinide series. One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made. answers.tutorvista.com
Rare Earth Metals