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History of the Periodic Table: Difference between revisions
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== Element Families == | == Element Families == | ||
There are distinct families in the [[periodic table]]. One example is the [[alkali metal]] family. It consists of all the elements in the [[periodic table]] that are very chemically reactive. The elements are [[lithium]], [[sodium]], [[potassium]], [[rubidium]], [[cesium]], and [[francium]]. These metals conduct electricity easily and have a bright and shiny surface. They all react easily with water. [[Alkali metals]] are most commonly used in streetlights, soap, rayon, and paper. There are many different families. The others are: [[ | There are distinct families in the [[periodic table]]. One example is the [[alkali metal]] family. It consists of all the elements in the [[periodic table]] that are very chemically reactive. The elements are [[lithium]], [[sodium]], [[potassium]], [[rubidium]], [[cesium]], and [[francium]]. These metals conduct electricity easily and have a bright and shiny surface. They all react easily with water. [[Alkali metals]] are most commonly used in streetlights, soap, rayon, and paper. There are many different families. The others are: alkaline-[[earth metals]], [[transition metals]], [[post-transition metals]], [[metalloids]], [[nonmetals]], [[halogens]], and [[noble gases]]. <ref name=BJU/> | ||
== Facts About the Periodic Table == | == Facts About the Periodic Table == | ||
