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.
Lanthanum reacts with water to form lanthanum hydroxide plus hydrogen gas. Lanthanum is chemically reactive and forms compounds with carbon, nitrogen, boron, selenium, silicon, phosphorus, sulfur, and with the halogens. Lanthanum usually exists as a trivalent ion, La 3+ , in its compounds.anthanum is also used to make night vision goggles (infrared-absorbing glass). High quality camera and telescope lenses contain lanthanum oxide (La 2 O 3) making use of its high refractive index and low dispersion.