Chemical elements Chemical elements The abundance of a chemical element measures how common the element is, or how much of the element there is. ...more on Wikipedia about "Abundance of the chemical elements"
Actinium is a chemical element in the periodic table that has the symbol Ac and atomic number 89. ...more on Wikipedia about "Actinium"
Aluminium or aluminum (see the spelling section below) is the chemical element in the periodic table that has the symbol Al and atomic number 13. It is a silvery and ductile member of the poor metal group of chemical elements. Aluminium is found primarily as the ore bauxite and is remarkable for its resistance to oxidation (due to the phenomenon of passivation) and its light weight. Aluminium is used in many industries to make millions of different products and is very important to the world economy. Structural components made from aluminium and its alloys are vital to the aerospace industry and very important in other areas of transportation and building in which light weight, durability, and strength are needed. ...more on Wikipedia about "Aluminium"
Americium is a synthetic element in the periodic table that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained by bombarding plutonium with neutrons and was the fourth transuranic element to be discovered. It was named for the Americas, by analogy with europium. ...more on Wikipedia about "Americium"
Amorphous silicon (a-Si) is the non-crystalline allotropic form of silicon. Silicon is normally tetrahedrally bonded to four neighboring silicon atoms. This is also the case in amorphous silicon, however, it does not form a continuous crystalline lattice as in crystalline silicon. Some atoms may actually have dangling bonds, which occur when it does not bond to four neighboring atoms. Since not all the atoms are four-fold coordinated, amorphous silicon is said to be under-coordinated. These dangling bonds are defects in the continuous random network, which can be passivated by introducing hydrogen into the silicon. It then becomes hydrogenated amorphous silicon. ...more on Wikipedia about "Amorphous silicon"
Arsenic is a chemical element in the periodic table that has the symbol As and atomic number 33. This is a notoriously poisonous metalloid that has three allotropic forms; yellow, black and grey. Arsenic and its compounds are used as pesticides, herbicides, insecticides and various alloys. ...more on Wikipedia about "Arsenic"
(Atomic radii of the elements (data page)) * J.C. Slater, J. Chem. Phys. 1964, 39, 3199. ...more on Wikipedia about "Atomic radii of the elements (data page)"
Barium is a toxic chemical element in the periodic table that has the symbol Ba and atomic number 56. A soft silvery metallic element, barium is an alkaline earth metal and melts at a very high temperature. Its oxide is called baryta and it is primarily found in the mineral barite but is never found in its pure form due to its reactivity with air. Compounds of this metal are used in small quantities in paints and in glassmaking. ...more on Wikipedia about "Barium"
Berkelium is a synthetic element in the periodic table that has the symbol Bk and atomic number 97. A radioactive metallic element in the actinide series, berkelium was first synthesized by bombarding americium with alpha particles ( helium ions) and was named after Berkeley, California. Berkelium was the fifth transuranic element to be synthesized. ...more on Wikipedia about "Berkelium"
Beryllium is the chemical element in the periodic table that has the symbol Be and atomic number 4. A toxic bivalent element, beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal, that is primarily used as a hardening agent in alloys (most notably beryllium copper). ...more on Wikipedia about "Beryllium"
Bismuth is a chemical element in the periodic table that has the symbol Bi and atomic number 83. This heavy, brittle, white crystalline trivalent poor metal has a pink tinge and chemically resembles arsenic and antimony. Of all the metals, it is the most naturally diamagnetic, and only mercury has less thermal conductivity. Lead-free bismuth compounds are used in cosmetics and in medical procedures. ...more on Wikipedia about "Bismuth"
Bohrium (Eka-Rhenium) is a chemical element in the periodic table that has the symbol Bh and atomic number 107. It is a synthetic element whose most stable isotope, Bh-262, has a half-life of 102 ms. ...more on Wikipedia about "Bohrium"
Boron is a chemical element in the periodic table that has the symbol B and atomic number 5. A trivalent metalloid element, boron occurs abundantly in the ore borax. There are several allotropes of boron; amorphous boron is a brown powder, but metallic boron is black. The metallic form is hard (9.3 on Mohs' scale) and a poor conductor at room temperature. It is never found free in nature. Crystalline boron exists in many polymorphs. Two rhombohedral forms, α-boron and β-boron containing 12 and 106.7 atoms in the rhombohedral unit cell respectively, and 50-atom tetragonal boron are the three most characterised crystalline forms. ...more on Wikipedia about "Boron"
Cadmium is a chemical element in the periodic table that has the symbol Cd and atomic number 48. A relatively rare, soft, bluish-white, toxic transition metal, cadmium occurs with zinc ores and is used largely in batteries. ...more on Wikipedia about "Cadmium"
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Caesium (also cesium in the United States) pronounced ; is a chemical element in the periodic table that has the symbol Cs and atomic number 55. It is a soft silvery-gold alkali metal which is one of at least three metals that are liquid at or near room temperature. This element is most notably used in atomic clocks. ...more on Wikipedia about "Caesium"
Calcium is a chemical element in the periodic table that has the symbol Ca and atomic number 20. Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of thorium, zirconium and uranium. Calcium is also the fifth most abundant element in the earth's crust. It is essential for living organisms, particularly in cell physiology, and is the most common metal in many animals. ...more on Wikipedia about "Calcium"
Californium is a synthetic element in the periodic table that has the symbol Cf and atomic number 98. A radioactive transuranic element, californium has very few uses and was discovered by bombarding curium with alpha particles ( helium ions). ...more on Wikipedia about "Californium"
Carbon is a chemical element in the periodic table that has the symbol C and atomic number 6. An abundant nonmetallic, tetra valent element, carbon has several allotropic forms: ...more on Wikipedia about "Carbon"
Cerium is a chemical element in the periodic table that has the symbol Ce and atomic number 58. ...more on Wikipedia about "Cerium"
A chemical element, often called simply element, is a chemical substance that cannot be divided or changed into other chemical substances by any ordinary chemical technique. The smallest unit of this kind of chemical substances is an atom. An element is a class of substances that contain the same number of protons in all its atoms. ...more on Wikipedia about "Chemical element"
A chemical symbol is an abbreviation or short representation of the name of a chemical element. Natural elements all have symbols of one or two letters; some man-made elements have temporary symbols of three letters. ...more on Wikipedia about "Chemical symbol"
Chromium is a chemical element in the periodic table that has the symbol Cr and atomic number 24. ...more on Wikipedia about "Chromium"
Cobalt is a chemical element in the periodic table that has the symbol Co and atomic number 27. ...more on Wikipedia about "Cobalt"
Curium is a synthetic element in the periodic table that has the symbol Cm and atomic number 96. A radioactive metallic transuranic element of the actinide series, curium is produced by bombarding plutonium with alpha particles ( helium ions) and was named for Marie Curie and her husband Pierre. ...more on Wikipedia about "Curium"
Darmstadtium (formerly ununnilium or Eka-Platinum) is a chemical element in the periodic table that has the symbol Ds and atomic number 110, making it one of the super-heavy atoms. It is a synthetic element and quickly decays; its isotopes of mass 267 to 273 have half-lives measured in microseconds. However, heavier isotopes of mass 280 and 281 have been synthesized recently which are more stable, with half-lives of 7.6 s and 1.1 min, respectively. Due to its presence in Group 10 it is believed to likely be a shiny solid metal. ...more on Wikipedia about "Darmstadtium" The view on http://www.shortopedia.com. Chemical_elements
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