1/20/2024 0 Comments Helium gas symbolThe other elements contained in this classification are as follows: An invaluable source of facts and information as a Chemistry reference guide. Our Periodic Table is simple to use - just click on the symbol for Helium as on the Periodic Table for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. People sometimes breathe in Helium as a joke to make their voices sound higher than they normally doĬheck out Helium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the Periodic Law, so that chemical elements with similar properties are in the same column. Helium-oxygen therapy is the administration of a mixture of helium and oxygen.Ĭomponent of artificial atmospheres and laser media It is also used in the prevention of nitrogen narcosis and decompression sickness. The main medical uses of helium are in respiratory therapy and testing. Interesting information on the Medical Uses of Helium, Health and Treatments. Medical Uses of Helium - Health and Treatments What is Helium? Occurrence of the Helium ElementĪbundances of the element in different environments In 1910 Ramsay also made and characterized radon. Ramsay also isolated helium which had been observed in the spectrum of the sun but had not been found on earth. These elements included Argon, Neon, Krypton and Xenon. Sir William Ramsay discovered the noble gases and received the Nobel Prize in Chemistry in 1904 "in recognition of his services in the discovery of the inert gaseous elements in air". The English astronomer Norman Lockyer and the English chemist Edward Frankland named the element. It was discovered by Sir William Ramsey in 1895. Helium was first detected during a solar eclipse in 1868 as a bright yellow line in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen. ![]() The name originates from the Greek word 'helios' meaning sun because the element was discovered by spectroscopy during a solar eclipse in the sun's chromosphere by the French astronomer Pierre-Jules-Cesar Janssen.įacts about the Discovery and History of the Helium Element What is Helium? Origin / Meaning of the name Helium The Atomic Number of this element is 2 and the Element Symbol is He. Helium was the first gas used for filling balloons and dirigibles. It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a super fluid in cryogenic research. It is less soluble in water than any other gas. This fact has key implications for the building up of the periodic table of elements.What is Helium as on the Periodic Table? Definition of the Helium ElementĪ colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. It is the Pauli exclusion principle that requires the electrons in an atom to occupy different energy levels instead of them all condensing in the ground state. ![]() In the periodic table, the elements are listed in order of increasing atomic number Z. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. The configuration of these electrons follows from the principles of quantum mechanics. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. See also: Atomic Number – Does it conserve in a nuclear reaction? Atomic Number and Chemical PropertiesĮvery solid, liquid, gas, and plasma is composed of neutral or ionized atoms. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. In a neutral atom there are as many electrons as protons moving about nucleus. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. ![]() Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The nucleus is composed of protons and neutrons. ![]() The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons.
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