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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!
Antimony is a chemical element with symbol Sb and atomic number 51. Classified as a metalloid, Antimony is a solid at room temperature.
Oxygen is the third most abundant element in the universe and makes up nearly 21% of the earth's atmosphere. Oxygen accounts for nearly half of the mass of the earth's crust, two thirds of the mass of the human body and nine tenths of the mass of water.
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.
Chlorine is a chemical element with symbol Cl and atomic number 17. Classified as a halogen, Chlorine is a gas at room temperature.
Periodic Table element Summary Sodium. Sodium is a chemical element with symbol Na and atomic number 11. Classified as an alkali metal, Sodium is a solid at room temperature.
Mercury. Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at room temperature.
Thorium is a chemical element with symbol Th and atomic number 90. Classified as a n actinide, Thorium is a solid at room temperature.
Terbium is a chemical element with symbol Tb and atomic number 65. Classified as a lanthanide, Terbium is a solid at room temperature.
Magnesium is a chemical element with symbol Mg and atomic number 12. Classified as a n alkaline earth metal, Magnesium is a solid at room temperature.