Chemical elements are substances composed of only one type of atom and they cannot be broken down further. Chemical elements are the simplest forms of matter and each one is assigned a specific atomic number. Check out these articles on chemical elements.



Molybdenum, a hard, silvery, metallic element. It is insoluble in most acids, and does not react with air at ordinary temperatures.

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  • Astatine

    Astatine, a radioactive chemical element. Astatine, a member of the halogen group of elements, is an extremely shortlived substance; its most stable isotope has a half-life period of only 8.3 hours. See more »

  • Berkelium

    Berkelium, a radioactive, metallic chemical element. Berkelium does not occur in nature; it is artificially created. See more »

  • Beryllium

    Beryllium, a grayish-white metallic chemical element, formerly called glucinum, or glucinium. See more »

  • Bismuth

    Bismuth, a metallic chemical element. It is brittle, has a high luster, and is grayish-white with a red or pink tinge. See more »

  • Boron

    Boron, a nonmetallic chemical element never found free in nature. It occurs in various compounds, including boric acid and borax. See more »

  • Bromine

    Bromine, a chemical element. It is a heavy, reddish-brown liquid with a choking odor. See more »

  • Cadmium

    Cadmium, a soft, silvery-white metallic element. It is much like zinc, but is a heavier metal with a lower melting point. See more »

  • Calcium

    Calcium, a soft, silver-white metallic chemical element. Calcium is malleable (can be hammered or rolled into a thin sheet) and ductile (can be drawn into wire), and can combine with many other metals to form alloys. See more »

  • Californium

    Californium, a radioactive, metallic chemical element. Californium does not occur in nature; it is produced artificially. See more »

  • Cesium

    Cesium, a silver-white metallic chemical element. Cesium is softer than talc, is ductile (can be drawn into wire), and has a low melting point. See more »

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