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  1. 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!

  2. 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 ...

  3. 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 ...

  4. NCBI | NLM | NIH

    Maintenance in progress. The page you are trying to reach is currently unavailable due to planned maintenance. Most services will be unavailable for 24+ hours starting 9 PM EDT on Friday, July 25, 2025.

  5. 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 ...

  6. Acetate | C2H3O2- | CID 175 - PubChem

    Acetic acid is one of the simplest carboxylic acids. It is an important chemical reagent and industrial chemical that is used in the production of plastic soft drink bottles, photographic film; and polyvinyl acetate for wood glue, as well as many synthetic fibres and fabrics.

  7. Ytterbium | Yb (Element) - PubChem

    Periodic Table element Summary Ytterbium. Ytterbium is a chemical element with symbol Yb and atomic number 70. Classified as a lanthanide, Ytterbium is a solid at 25°C (room temperature).

  8. Europium | Eu (Element) - PubChem

    Periodic Table element Summary Europium. Europium is a chemical element with symbol Eu and atomic number 63. Classified as a lanthanide, Europium is a solid at 25°C (room temperature).

  9. Lead | Pb (Element) - PubChem

    Chemical element, Lead, information from authoritative sources. Look up properties, history, uses, and more.

  10. Nickel | Ni (Element) - PubChem

    Periodic Table element Summary Nickel. Nickel is a chemical element with symbol Ni and atomic number 28. Classified as a transition metal, Nickel is a solid at 25°C (room temperature).