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  1. en.wikipedia.org › wiki › NonmetalNonmetal - Wikipedia

    19 hours ago · v. t. e. Nonmetals are chemical elements that mostly lack distinctive metallic properties. They range from colorless gases like hydrogen to shiny crystals like iodine. Physically, they are usually lighter (less dense) than metals; brittle or crumbly if solid; and often poor conductors of heat and electricity.

  2. en.wikipedia.org › wiki › TennessineTennessine - Wikipedia

    2 days ago · Tennessine is a synthetic chemical element; it has symbol Ts and atomic number 117. It has the second-highest atomic number and joint-highest atomic mass of all known elements, and is the penultimate element of the 7th period of the periodic table . The discovery of tennessine was officially announced in Dubna, Russia, by a Russian–American ...

    • semimetallic (predicted)
    • [294]
    • 117
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  4. en.wikipedia.org › wiki › CopperCopper - Wikipedia

    3 days ago · Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color.

    • Red-orange metallic luster
    • group 11
  5. en.wikipedia.org › wiki › EinsteiniumEinsteinium - Wikipedia

    3 days ago · Einsteinium is a synthetic chemical element; it has symbol Es and atomic number 99. It is a member of the actinide series and it is the seventh transuranium element. It was named in honor of Albert Einstein . Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.

    • silvery; glows blue in the dark
    • [252]
    • 99
  6. en.wikipedia.org › wiki › NeodymiumNeodymium - Wikipedia

    1 day ago · Neodymium is the fourth member of the lanthanide series. In the periodic table, it appears between the lanthanides praseodymium to its left and the radioactive element promethium to its right, and above the actinide uranium. Its 60 electrons are arranged in the configuration [Xe]4f 4 6s 2, of which the six 4f and 6s electrons are valence.

    • 60
  7. en.wikipedia.org › wiki › BismuthBismuth - Wikipedia

    3 days ago · Bismuth is a chemical element; it has symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs naturally, and its sulfide and oxide forms are important commercial ores.

  8. en.wikipedia.org › wiki › FleroviumFlerovium - Wikipedia

    4 days ago · Flerovium is a superheavy synthetic chemical element; it has symbol Fl and atomic number 114. It is an extremely radioactive synthetic element, named after the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research in Dubna, Russia, where the element was discovered in 1999. The lab's name, in turn, honours Russian ...

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