Chest radiograph. A chest radiograph, colloquially called a chest X-ray (CXR), or chest film, is a projection radiograph of the chest used to diagnose conditions affecting the chest, its contents, and nearby structures. Chest radiographs are the most common film taken in medicine.
Helium atom is created by two Hydrogenâs atoms which are the smallest, basic, stabile, unclosed quantum, wave-particle formation.Hydrogen atom by. different relationships create all stabile formations and. Helium atom { a particle of nucleus} is the most stabile formation.Atoms structures are bond by energetic part {semi-loop}. strong forces of quantum and are very strong bonds but molecules relationships {covalence} are bond by gravity{semi-loop} - weak forces and are bond by electrons.y United Nature Theory. Helium atom is created by two Hydrogenâs atoms which are the smallest, basic, stabile, unclosed quantum, wave-particle formation. Hydrogen atom by. different relationships create all stabile formations and. Helium atom { a particle of nucleus} is the most stabile formation.
Helium is not known to be toxic. Characteristics: Helium is a light, odorless, colorless, inert, monatomic gas. It can form diatomic molecules, but only weakly and at temperatures close to absolute zero. Helium has the lowest melting point of any element and its boiling point is close to absolute zero.elium is also made by nuclear fusion of hydrogen in stars like our own. Image: Gnixon. Helium on earth comes from nuclear fission of radioactive elements such as uranium. Here a radioactive nucleus emits a helium nucleus (also known as an alpha particle).