Domains & Types » Chemistry » Chemical Element

Chemical Element

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The elements of the periodic table. more

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Helium Namesake 7440-59-7 He
Helium (He) is a colorless, odorless, tasteless, non-toxic, inert monatomic chemical element that heads the noble gas series in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the elements and it...
Hassium Namesake 54037-57-9  
Hassium ( or ) is a synthetic element in the periodic table that has the symbol Hs and atomic number 108. Hassium oxidizes similarly to osmium above it, to a hassium tetroxide with a lower volatility than osmium tetroxide. Hassium was first...
Argon   7440-37-1 Ar
Argon is a chemical element designated by the symbol Ar. Argon has atomic number 18 and is the third element in group 18 of the periodic table (noble gas). Argon is present in the Earth's atmosphere at 0.93%.Terrestrially, it is the most abundant...
Strontium   7440-24-6 Sr
Strontium is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when exposed to air. It...
Polonium Namesake 7440-08-6 Po
Polonium is a chemical element with the symbol Po and atomic number 84. A rare and highly radioactive metalloid, polonium is chemically similar to bismuth and tellurium , and it occurs in uranium ore. Polonium has been studied for possible use in...
Selenium   7782-49-2 Se
Selenium is a chemical element with the atomic number 34, represented by the chemical symbol Se. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature. It is toxic in large amounts, but...
Xenon   7440-63-3 Xe
Xenon ( or ) is the chemical element that has the symbol Xe and atomic number 54. A colorless, heavy, odorless noble gas, xenon occurs in the earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical...
Silicon   7440-21-3 Si
Silicon ( or , ) is the chemical element that has the symbol Si and atomic number 14. A tetravalent metalloid, silicon is less reactive than its chemical analog carbon. As the eighth most common element in the universe by mass, silicon very rarely...
Ununpentium   54085-64-2  
Ununpentium ( or ) is the temporary name of a synthetic superheavy element in the periodic table that has the temporary symbol Uup and has the atomic number 115. Two isotopes are currently known, Uup-287 and Uup-288. Element 115 also falls in the...
Protactinium   7440-13-3  
Protactinium is a chemical element with the symbol Pa and atomic number 91. Protactinium is a silver metal element that belongs to the actinoid group, with a bright metallic luster that it retains for some time in the air. It is superconductive at...
Dysprosium   7429-91-6  
Dysprosium is a chemical element with the symbol Dy and atomic number 66. Dysprosium is a rare earth element that has a metallic, bright silver luster, relatively stable in air at room temperature, but dissolving readily in dilute or concentrated...
Plutonium   Namesake 7440-07-5 Pu
Plutonium (, symbol Pu, atomic number 94) is a rare radioactive, metal chemical element. The most significant isotope of plutonium is Pu, with a half-life of 24,100 years; this isotope is fissile and is used in most modern nuclear weapon. Plutonium...
Nitrogen   7727-37-9 N
Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic weight 14.0067. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78.08% by volume of Earth...
Iodine   7553-56-2  
Iodine (, or ; from "violet"), is a chemical element that has the symbol I and atomic number 53. Naturally-occurring iodine is a single isotope with 74 neutrons. Chemically, iodine is the least reactive of the halogen, and the most...
Carbon Bicycle Component Material 7440-44-0 C
Carbon is a chemical element with the symbol C and atomic number is 6. As a member of group 14 on the periodic table, it is nonmetal and tetravalent—making four electrons available to form covalent chemical bond. There are three naturally occurring...
Thallium   7440-28-0  
Thallium is very soft and malleable and can be cut with a knife. It has a metallic luster, but when exposed to air, it quickly tarnishes with a bluish-grey tinge that resembles lead. (It is preserved by keeping it under oil). A heavy layer of oxide...
Beryllium   7440-41-7 Be
Beryllium is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light-weight yet brittle alkaline earth metal. It is primarily used as a hardening agent in alloy, most notably beryllium...
Meitnerium Namesake 54038-01-6  
Meitnerium is a chemical element in the periodic table that has the symbol Mt and atomic number 109. Mt is a synthetic element whose most stable isotope, Mt-278, has a predicted half-life of a half-hour. Meitnerium was first synthesized on August...
Chromium   7440-47-3  
Chromium is a chemical element which has the symbol Cr and atomic number 24. It is a steel-gray, lustrous, hard metal that takes a high polish and has a high melting point. It is also odourless, tasteless, and malleable. Chromium was named after...
Mercury Namesake 7439-97-6 Hg
Mercury, also called quicksilver, is a chemical element with the symbol Hg (Latinized , meaning watery or liquid silver) and atomic number 80. A heavy, silvery d-block metal, mercury is one of six elements that are liquid at or near room temperature...
Yttrium Namesake 7440-65-5 Y
Yttrium , is a chemical element that has the symbol Y and atomic number 39. A silvery metallic transition metal, yttrium is common in rare-earth mineral and two of its compounds are used to make the red color phosphor in cathode ray tube displays,...
Scandium   7440-20-2  
Scandium is a chemical element that has the symbol Sc and atomic number 21. A silvery white metal that is always present as compounds, scandium ores occur as rare minerals from Scandinavia and elsewhere, and it is sometimes considered along with...
Tellurium   13494-80-9 Te
Tellurium is a chemical element that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like tin, tellurium is chemically related to selenium and sulfur. Tellurium is primarily used in alloy and as a semiconductor....
Astatine   7440-68-8  
Astatine is a radioactive chemical element with the symbol At and atomic number 85. It is the heaviest of the halogen. This highly radioactive element has been confirmed by mass spectrometer to behave chemically much like other halogen, especially...
Lead   7439-92-1 Pb
Lead is a main group element with a symbol Pb . Lead has the atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish white color when freshly cut, but tarnishes to a dull grayish...
Iron Nutrient 7439-89-6 Fe
Iron is a chemical element with the symbol Fe and atomic number 26. Iron is a group 8 and period 4 element. Iron is a lustrous, silvery soft metal. It is one of the few ferromagnet elements. Iron and nickel are notable for being the final...
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Berkelium Namesake 7440-40-6 Bk
''Bk redirects here. For other uses of the abbreviation, see BK (disambiguation).''Berkelium ( or ) is a synthetic element with the symbol Bk and atomic number 97. A radioactive metal element in the actinide series, berkelium was first synthesized...
Platinum   7440-06-4  
Platinum is a chemical element with the atomic symbol Pt and an atomic number of 78. It is in group 10 of the Periodic Table of Elements. A heavy, malleable, ductile, precious, gray-white transition metal, platinum is resistant to corrosion and...
Dubnium Namesake 53850-35-4  
Dubnium is a chemical element in the periodic table that has the symbol Db and atomic number 105.This is a radioactive synthetic element whose most stable isotope is Db with a half life of 28 hours. This is the longest lived transactinide isotope...
Seaborgium Namesake 54038-81-2  
Seaborgium is a chemical element in the periodic table that has the symbol Sg and atomic number 106, Image of Seaborgium http://www.jpgmag.com/photos/585957. Seaborgium is a synthetic element whose most stable isotope Sg has a half-life of 1.9...