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The group of rare earth elements (REEs) comprises a total of 17 elements, all of which possess similar chemical properties. In addition to the two lightest elements, scandium and yttrium, the group ...

Life itself depends on a core group of about a dozen elements – such as carbon, hydrogen, oxygen and nitrogen – along with ...

Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table. It belongs to a special group of elements called ...