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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!
Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.
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
Periodic Table element Summary Silicon. Silicon is a chemical element with symbol Si and atomic number 14. Classified as a metalloid, Silicon is a solid at room temperature.
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 ...
Periodic Table element Summary Hydrogen. Hydrogen is a chemical element with symbol H and atomic number 1. Classified as a nonmetal, Hydrogen is a gas at room temperature.
Periodic Table element Summary Antimony. Antimony is a chemical element with symbol Sb and atomic number 51. Classified as a metalloid, Antimony is a solid at room temperature.
Periodic Table element Summary Lead. Lead is a chemical element with symbol Pb and atomic number 82. Classified as a post-transition metal, Lead is a solid at room temperature.
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 room temperature.
Periodic Table element Summary Magnesium. Magnesium is a chemical element with symbol Mg and atomic number 12. Classified as an alkaline earth metal, Magnesium is a solid at room temperature.