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