One interesting fact regarding the chemical element argon is that an estimated 65 trillion metric tons of argon is present in Earth's atmosphere, as claimed by one of the element's discover, Lord Rayleigh. Argon was jointly discovered in 1894 by Scottish chemist William Ramsay and English physicist John William Strut, otherwise known as Lord Rayleigh.Continue Reading
Argon derived its name from the Greek term "argos," which means "inactive," "lazy" or "idle." Its non-reactive nature was first detected by Sir Henry Cavendish, although this inherent property also hindered him from fully separating the element from the various components of air. The first noble gas to be discovered, scientists have found no biological role for argon. It is primarily used to as a protective layer in incandescent light bulbs to prevent corrosion of the filament. A blue-green color is radiated when argon is utilized as a gas laser.
In 1957, argon's chemical symbol was changed from "A" to "Ar" by the International Union of Pure and Applied Chemists. It shares this distinction with the element mendelevium, which was modified from "Mv" to "Md."
The most abundant naturally occurring isotope of argon is argon-40, comprising more than 99 percent of the planet's argon supply. This results from the radioactive decay of potassium-40, with the levels of argon-40 continually rising as the earth ages. The radioactive decay of potassium into argon is currently being used in geologic precision dating.Learn more about Atoms & Molecules
The molar mass of the chemical element chromium is 51.996 grams per mole. Chromium is the first element of Group 6 on the periodic table and is represented by the atomic number 24 and the symbol Cr.Full Answer >
The main distinguishing factor between the various chemical elements is the number of protons in an element's nucleus, which is known as the element's atomic number. The atomic number also corresponds to the number of electrons the element has because elements have equal numbers of protons and electrons.Full Answer >
The Lewis dot structure for sulfur includes the upper case letter S, the element's chemical symbol, surrounded by two sets of paired dots and two single dots evenly spaced around the letter. These dots represent the valance electrons sulfur has the potential to contribute when forming bonds.Full Answer >
A material that is made up of only one kind of atom is called a chemical element, a basic element or simply an element. Elements are pure chemical substances distinguished by a unique atomic number.Full Answer >