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Elements

Fermium is a synthetic, radioactive metallic element. It has the symbol Fm and atomic number 100. It is an element in the actinide series. It is named after nuclear physicist Enrico Fermi. Fermium became the eighth transuranic (having an atomic number ...

Europium is a chemical element with the symbol Eu and atomic number 63. Europium is named after the continent Europe. It is the most reactive of the rare earth elements. It rapidly oxidizes in air. Europium ignites in the air at around 302 degrees Fahr...

Erbium is a chemical element with the symbol Er and atomic number 68. Erbium is a rare, silvery-white metallic lanthanide (an element having an atomic number between 57 and 71). It is found solid in its natural state and is commonly found with several ...

Einsteinium is a metallic synthetic element with the symbol Es and atomic number 99. It became the seventh transuranic (atomic number higher than 99) element produced. It was named for Albert Einstein. It is an element found within the actinoid series ...

Dysprosium is a chemical element with the symbol Dy and atomic number 66. This rare earth element has a metallic, bright silver luster. Dysprosium is not found freely in nature, but is found in various minerals, especially xenotime. It was first identi...

Curium is a synthetic radioactive chemical element with the symbol Cm and atomic number 96. This transuranic (atomic number greater than 92) element of the actinide series is produced by bombarding plutonium with helium ions. Curium does not occur natu...

Californium is a metallic chemical element. It has the symbol Cf and the atomic number 98. This is a radioactive transuranic (atomic number greater than 92) element. Californium is used for starting nuclear reactors, optimizing coal power plants, the t...

Cesium (or Caesium) is a chemical element with the symbol Cs and atomic number 55. Caesium is a soft alkali metal that is silvery-gold. It melts and liquefies at 83 degrees Fahrenheit and is one of only five metals that are liquid close to room tempera...

Berkelium is a synthetic radioactive metallic element. It has the symbol Bk and the atomic number 97. It is an actinoid found in the actinide series (which includes actinium). Berkelium was first synthesized by bombarding americium with helium ions. It...

Astatine is a radioactive chemical element. The symbol for Astatine is At and its atomic number is 85. Astatine is the heaviest halogen discovered. It was first produced by Dale R. Corson, Kenneth Ross Mackenzie, and Emilio Segrè in 1940. Although a...

Americium is a synthetic radioactive metallic element. The symbol for Americium is Am and the atomic number is 95. Americium is an actinide that was first isolated by Glenn T. Seaborg in 1944 while attacking plutonium with neutrons. It became the fourt...

Actinium is a radioactive chemical element. The symbol for Actinium is Ac and the atomic number is 89. Actinium was discovered in 1899 by French chemist André-Louis Debierne. It was the first non-primordial radioactive element to be isolated. Actini...

Aluminum (or aluminium) is a soft, lightweight, silvery metal. It is an element in the boron group on the periodic table of elements, with the symbol Al and atomic number 13. On the earth's crust, aluminum is the most abundant metal, and the third most...