History of the Periodic Table: Difference between revisions

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== Artificial Elements ==
== Artificial Elements ==
The only large addition to the [[Periodic Table]] was after World War II. The experiments with nuclear energy created heavy elements. These elements created in man-made nuclear reactions were called [[transuranium elements]]. They were given this name because their atomic numbers are greater than uranium's [[atomic number]]. Neptunium and plutonium are the only [[transuranium elements]] found in nature. The rest of them are products of the nuclear reactions. <ref name=BJU/>
The only large addition to the [[Periodic Table]] was after World War II. The experiments with nuclear energy created heavy elements. These elements created in man-made nuclear reactions were called transuranium elements. They were given this name because their atomic numbers are greater than uranium's [[atomic number]]. Neptunium and plutonium are the only transuranium elements found in nature. The rest of them are products of the nuclear reactions. <ref name=BJU/>


== The Modern Periodic Table ==
== The Modern Periodic Table ==
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