Search results for "Isotopes of nitrogen" - New World Encyclopedia

Nitrogen (symbol N, atomic number 7) is the chief constituent of the ... There are two stable isotopes of nitrogen: 14N and 15N. By far the ...

Argon (chemical symbol Ar, atomic number 18) is a member of the noble ... The inertness of argon is a very useful property for a number of applications ...

If a sample of material decays at a certain rate over time, its half ... In the case of radioactive decay, each different radioactive isotope ...

pure form until after the development of ion exchange and metallographic ... (or lanthanide) that lies in period six of the periodic table, between ...

9) is a nonmetal that belongs to a group of chemical elements known as ... Fluorine and its compounds are useful for a wide range of applications ...

A chemical element, often called simply element, is the class of atoms ... periodic table itself shows two main types of elements, metals and non-metals ...

with other rare earth elements, it is one of the most reactive of the rare ... Lanthanum, its alloys, and its compounds have a wide range of applications ...

alkali strontium hydroxide. The properties of strontium are closest to those ... is widely used in the glass screens of color television sets. Strontium ...

quot; element used in the production of the first high-temperature ... were found to have a relatively high content of yttrium. ...

mercury-vapor lamps. A radioactive isotope of scandium [Sc-46] is used as ... the only known concentrated sources of this element. It is also found ...

Nuclear physics is a field of physics that involves investigation ... are the most commonly known applications of nuclear physics, but the research ...

is a silvery white, soft metal. It has one of the highest melting points ... free in nature. The main commercial source of molybdenum is the mineral molybdenite ...

properties are intermediate between those of metals and nonmetals. It can ... antiseptics, adhesives, and a variety of other products. The isotope ...

combined in several minerals and is one of the 26 elements that commonly ... several salts. Their colors reminded him of chromium salts, so he named ...

gas that makes up about 21% (by volume) of air. In combination with other ... Oxygen is essential for the respiratory function of humans, animals ...

Environmental engineering is the application of science and engineering ... incorporates elements from a wide range of disciplines, including chemistry ...

to blue. It belongs to the same family of chemical elements as arsenic ... This element expands on freezing and was long an important component ...

a vital role in the structures and processes of the living and nonliving worlds ... The careless disposal of paints, plastics, and other carbon-containing ...

Helium (chemical symbol He, atomic number 2) is a minor component ... almost all new helium is created as a result of the nuclear fusion of hydrogen ...

) is a radioactive isotope of hydrogen. The nucleus of tritium (sometimes ... The properties of tritium make it useful for various applications ...

energy by emitting radiation in the form of particles or electromagnetic ... The atomic nucleus comprises certain combinations of protons and neutrons ...

#039;s crust, constituting about 2 percent of the crust by weight. It is ... In its ionic form, magnesium is one of the most essential elements ...

atomic number 4) ranks among the lightest of all known metals. Steel-gray ... Alloys of beryllium with copper or nickel are strong and wear-resistant ...

samples. 7Li would thereforehave a content of up to 96.25%. ... lightest solid chemical element and a member of the group of elements known ...

multivalent nonmetal that belongs to the nitrogen group of chemical elements ... When purified artificially, several different allotropic forms of ...

The development of the periodic table of the elements parallels the ... eighteenth and nineteenth centuries the rate of discovery of new elements increased ...

In nuclear physics, beta decay is a type of radioactive decay involving ... There are two forms of beta decay: "beta minus" (β−) ...

Examples in which white pigment, consisting of titanium oxide, is used, are ... forms and five naturally occurring isotopes of this element—46Ti through ...

with four allotropic forms. The stable form of antimony is a blue-white metal ... semiconductor industry for the manufacture of diodes and infrared detectors ...

Nuclear fission is the splitting of the nucleus of an atom into parts ... for nuclear power and to drive the explosion of nuclear weapons. Both uses ...

or as sulfide and sulfate minerals. Many of the unpleasant odors of organic ... This element is essential for living organisms, particularly as part ...

It comes in many allotropic forms, of which the yellow, black, and ... in history by murderers, including members of the ruling class, to gain wealth ...

metallic chemical element that is part of the actinide series. It is ... uranium ores. These come about by a process of neutron capture by 238U nuclei ...

Ammonia is a chemical compound of nitrogen and hydrogen, with the ... several important roles, serving as a source of nitrogen for plants and helping ...

chemical element in the actinide series of the periodic table. The heaviest ... 235 (0.72 percent), and a very small amount of uranium-234 (0.0058 percent ...

Coal is a black or brownish-black sedimentary rock composed primarily ... into nearby water courses. The process of burning of coal generates waste ...

:This article elaborates on the central technology of generating nuclear ... the chain reaction occurs in a fraction of a second and is uncontrolled ...

Earth's atmosphere. Almost 90 percent of all the incoming cosmic ray ... Cosmic rays originate from a wide variety of sources--ranging from ...

Project refers specifically to the period of the project from 1941-1946 ... Germany might be developing nuclear weapons of its own. Born out of a small ...

produces a three-dimensional image or map of functional processes in the ... is FDG ([18F]-fluorodeoxyglucose), an analog of glucose, the concentrations ...

A star is a massive, luminous ball of plasma that is held together ... composition and many other properties of a star by observing its spectrum ...

fullerite. Its hardness and high dispersion of light make it useful for industrial ... stm "Chinese made first use of diamond,"] BBC News (May ...

Nuclear power is a type of nuclear technology involving the controlled ... The use of nuclear power has also engendered much debate. Critics ...

that is essential for all known forms of life. Laurence D. Barron, ... gaseous state, water vapor. About 71 percent of the Earth's surface is ...