These gases exist only in very low concentration and also are very unreactive.
These gases exist only in very low concentration and also are very unreactive.
The zero group of noble gases was not discovered during Mendeleev's time. Sir William Ramsay was able to add them without disturbing the basic concept of the table.
Neon was discovered in 1898 by the British chemists Sir William Ramsay and Morris W. Travers in London Neon was discovered when Ramsay chilled a sample of the atmosphere until it became a liquid, then warmed the liquid and captured the gases as they boiled off. The gases that boiled off, in addition to nitrogen, oxygen, and argon, were krypton, xenon, and neon.
The element argon was discovered by Lord Rayleigh and Sir William Ramsay in 1894. They were able to isolate argon by removing all other gases from a sample of air, leading to the discovery of this new element.
Ramsay and Travers discovered xenon in 1898 by fractionally distilling liquid air. By isolating and purifying the gas they were able to identify its unique spectral lines, leading to the discovery of a new element which they named xenon.
so that you are able to breath
The discovery of Earth's atmosphere can be attributed to the development of early scientific observations and experiments, such as those by Robert Boyle and Isaac Newton in the 17th century. Through these investigations, scientists were able to understand the composition of gases surrounding the Earth and eventually define the concept of the atmosphere as a layer of gases held in place by Earth's gravity.
maybe because the gases it contains
1. Estimates (i.e. budget, schedule, etc.) become more realistic as work progresses, because important issues are discovered earlier.2. It is more able to cope with the (nearly inevitable) changes that software development generally entails.3. Software engineers (who can get restless with protracted design processes) can get their hands in and start working on a project earlier.
The Titanic was able to be discovered by the cordinates
Noble gases are generally considered unreactive, due to the stability of their electron shells, and it was originally believed that they could not form compounds. It was later discovered that a very strong oxidizing agent though is able to form compounds with them.
nothing, Tasmania was named after him becoz he discovered it