Xenon was part of the first noble-gas compound synthesized. Several others involving Xenon have been found since then. Xenon was discovered by Ramsey and Travers in Xenon is used for filling flash lamps and other powerful lamps. Electrical excitation of xenon produces a burst of brilliant white light. Also it is used in bubble chambers and modern nuclear power reactors.
Browse by category Add to Your Boards Add to the board Select a board Create a new board. Something Went Wrong. Don't have an account? What are atomic mass numbers? The mass number symbol A, from the German word Atomgewicht [atomic weight] , also called the atomic mass number or nucleic acid number, is the total number of protons and neutrons called nucleons together in an atomic nucleus.
The mass number is different for each isotope of a chemical element. What is the charge of a proton? Proton charge which element has 16 neutrons? Phosphorus How many neutrons are there in gold?
The xenon atoms have 54 electrons and the shell structure is 2. The electron configuration of the neutral xenon in the ground state is [Kr]. What does xenon look like? Its atomic number is 54 and it belongs to the noble gases found in group 18 of the periodic table. Xenon is odorless, colorless and heavier than the air in our atmosphere. Due to its ability to emit light when powered, it can be used in special lamps. Mass numbers of typical isotopes of Xenon are The number of electrons in an electrically-neutral atom is the same as the number of protons in the nucleus.
Therefore, the number of electrons in neutral atom of Xenon is Each electron is influenced by the electric fields produced by the positive nuclear charge and the other Z — 1 negative electrons in the atom. Since the number of electrons and their arrangement are responsible for the chemical behavior of atoms, the atomic number identifies the various chemical elements.
The configuration of these electrons follows from the principles of quantum mechanics. In the periodic table, the elements are listed in order of increasing atomic number Z. Xenon is used in light-emitting devices called xenon flash lamps , used in photographic flashes and stroboscopic lamps.
Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized. A proton is one of the subatomic particles that make up matter. In the universe, protons are abundant, making up about half of all visible matter. The proton has a mean square radius of about 0. The protons exist in the nuclei of typical atoms, along with their neutral counterparts, the neutrons.
Neutrons and protons, commonly called nucleons , are bound together in the atomic nucleus, where they account for Research in high-energy particle physics in the 20th century revealed that neither the neutron nor the proton is not the smallest building block of matter.
A neutron is one of the subatomic particles that make up matter.
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