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  • Periodic Table of Elements - PubChem
    Interactive periodic table with up-to-date element property data collected from authoritative sources Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
  • Periodic Table - PubChem
    As we mark the 150th anniversary of the periodic table, the scientific community has declared 2019 to be “The International Year of the Periodic Table” PubChem is celebrating by launching the PubChem Periodic Table and corresponding Element pages
  • PubChem
    PubChem is the world's largest collection of freely accessible chemical information Search chemicals by name, molecular formula, structure, and other identifiers Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more
  • PERIODIC TABLE OF ELEMENTS - PubChem
    PERIODIC TABLE OF ELEMENTS Chemical Group Block 17 Atomic Number Cl Symbol Chlorine Name Halogen Chemical Group Block 1 H Hydrogen Nonmetal 1 1 2 He Helium Noble Gas 18 3 Li Lithium Alkali Metal 2 4 Be Beryllium Alkaline Earth M … 2 5 B Boron Metalloid 13 6 C Carbon Nonmetal 14 7 N Nitrogen Nonmetal 15 8 O Oxygen Nonmetal 16 9 F Fluorine
  • Atomic Mass | Periodic Table of Elements - PubChem
    Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots
  • PERIODIC TABLE OF ELEMENTS - PubChem
    PERIODIC TABLE OF ELEMENTS Electronegativity 17 Atomic Number Cl Symbol Chlorine Name 3 16 Electronegativity (Pauling Scale) 1 H Hydrogen 2 2 1 1 2 He Helium 18 3 Li Lithium 0 98 2 4 Be Beryllium 1 57 2 5 B Boron 2 04 13 6 C Carbon 2 55 14 7 N Nitrogen 3 04 15 8 O Oxygen 3 44 16 9 F Fluorine 3 98 17 10 Ne Neon 11 Na Sodium 0 93 3 12 Mg
  • PERIODIC TABLE OF ELEMENTS - PubChem
    PERIODIC TABLE OF ELEMENTS Electron Configuration 17 Atomic Number Cl Symbol Chlorine Name [Ne]3s 2 3p 5 Electron Configuration 1 H Hydrogen 1s 1 1 1 2 He Helium 1s 18 2 3 Li Lithium [He]2s 1 2 4 Be Beryllium [He]2s 2 2 5 B Boron [He]2s 2p 13 6 C Carbon [He]2s 2p 14 2 7 N Nitrogen [He]2s 2p 15 3 8 O Oxygen [He]2s 2p 16 2 4 9 F Fluorine [He]2s
  • Cobalt | Co (Element) - PubChem
    The name derives from the German Kobold for "evil spirits" or "goblins", who were superstitiously thought to cause trouble for miners because the mineral contained arsenic that injured their health and the metallic ores did not yield metals when treated with the normal methods Cobalt was discovered in 1735 by the Swedish chemist Georg Brandt
  • Atomic Radius | Periodic Table of Elements - PubChem
    Explore how atomic radius changes with atomic number in the periodic table of elements via interactive plots
  • Plutonium | Pu (Element) - PubChem
    Periodic Table element Summary Plutonium Plutonium is a chemical element with symbol Pu and atomic number 94 Classified as an actinide, Plutonium is a solid at 25°C (room temperature)





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