Argon, #18 on the periodic table, is colorless and odorless, like all of the noble gases It has an atomic mass of 39 948 amu, and its electron levels are 2-8-8 Ar was discovered by Lord Rayleigh and Sir W Ramsay in England It melts at 83 95 K, and boils at 87 45 K Many people don't realize that argon makes up a full 1% of our atmosphere, while carbon dioxide is only a fraction of a percent of our atmosphere Argon is primarily used to fill the empty space in incandescent light bulbs, and is used to create a greenish color in "neon" lights Argon is 2 5 times as soluble in water as nitrogen, and has about the same solubility as oxygen Argon is very inert, but it does form a hydrate, and ion molecules such as (ArKr)+, (ArXe)+, and (NeAr)+ These, however, do not have true chemical bonds Natural argon has three stable and five radioactive isotopes At STP (20 degrees C, 1 atm), Ar has a density of 1 784 g/L
A colorless, odorless element Uses include shield in arc welding, furnace brazing, electric and specialized light bulbs and for use in geiger-counting tubes, and lasers Hazard: May cause dizziness and drowsiness and rapid suffocation In liquid form, is extremely cold and may cause frostbite
Noble gas, symbol Ar, of atomic mass 40, that composes 0 93 by volume of dry air Argon is constantly produced in the earth's crust from the radioactive decay of 40K and is subsequently released into the atmosphere It is the most abundant of the inert gases in the atmosphere, and the third most abundant of all atmospheric constituents Argon was discovered by Rayleigh and Ramsay in 1894
Argon is an inert gas which exists in very small amounts in the atmosphere. It is used in electric lights. a colourless gas that is found in very small quantities in the air and is sometimes used in electric light bulbs. It is a chemical element : symbol Ar (argos ; because it does not react chemically). Chemical element, chemical symbol Ar, atomic number
A colorless, odorless, non-toxic gas used to fill the airspace between panes of Insulating Glass The addition of argon greatly increases the thermal performance of a window by minimizing heat transfer
a nontoxic gas that is heavier than air, therefore it reduces the transfer of heat and cold It also reduces noise
A gas and air constituent used to fill insulating units to increase thermal performance in windows
A colorless, odorless inert gas sometimes used in the spaces between the panes in energy efficient windows This gas is used because it will transfer less heat than air Therefore, it provides additional protection against conduction and convection of heat over conventional double -pane windows
an inert gas that makes up less than one percent of air (sometimes used as a drysuit gas)
a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness
Argon is a natural element that comes in a gaseous form It will not react with other elements so it makes a good air-replacement insulator for use in experiments Small amounts of argon exist in the Earth's atmosphere
An inert gas that makes up less than one percent of air (sometimes used as a dry suit gas)
No compounds of it are known, but there is physical evidence that its molecule is monatomic
A gas which, when mixed with mercury, is used in fluorescent lamps and neon tubes In neon tubes, the combination of gases creates a blue color In a neon tube by itself, argon is a pale lavender
A colorless, odorless inert gas that is the third most abundant constituent of dry air, comprising 0 93% of the total
An inert (will not unite with any other elements to form chemical compounds) gas used in incandescent and fluorescent lamps Inincandescent lamps it helps to retard evaporation of tungsten filament
Colourless, odourless, and tasteless, it is the most abundant of the noble gases on Earth and the one most used in industry. It constitutes about 1% of air and is obtained by distillation of liquid air. Argon provides an inert gas shield in welding and brazing, in lightbulbs and lasers, in Geiger counters, and in the production and fabrication of certain metals. Because a radioactive form of argon is produced by decay of a naturally occurring radioactive potassium isotope, it can be used to date rocks and samples more than 100,000 years old
A method of estimating the age of igneous rocks or of archaeological objects by measuring the amount of argon that has built up through the radioactive decay of potassium
Method for determining the age of igneous rocks based on the amount of argon-40 in the rock. Radioactive potassium-40 decays to argon-40 with a half-life of about 1.3 billion years, making this method useful for dating rocks that are billions of years old. A more sophisticated method, called argon-argon dating, provides a more accurate estimate of the original potassium-40 content by means of the ratio of argon-40 to argon-39 in the rock, thus yielding a more accurate age determination. See also dating