Woodridge, IL is in the northeastern part of Illinois in the east north central United States. Is In Woodridge, IL These Counties: DuPage County, Will County, Cook County. Neighboring Cities to Woodridge, IL:
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive. Because alkali metals are so reactive, they are found in nature only in combination with other elements.
Examples of alkali metals: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), ceasium (Cs), and francium (Fr). Although Hydrogen, is a member of group sometimes exhibit the properties of alkali metals. Examples of halogens are Fluorine (F), Chlorine (Cl), Bromine (Br) and Iodine (I).