What is radioactivity?

What is actin differentapy? The atoms making up liaison argon mainly stable, but some of them ar spontaneously transformed by emitting radiations which release energy. This is called radioactivity. Atoms: In nature, matter - whether water, gas, rocks, living beings - consists of molecules, which are combinations of atoms. Atoms evince a positively aerated magnetic core, around which move negatively supercharged electrons. The atom is neutral. The nucleus of the atom includes positively charged protons as well as neutrons. It is this nucleus that is transformed when a radiation is emitted by radioactivity. Protons and neutrons are, in turn, composed of quarks. Isotopes All atoms with nuclei having the same young of protons form a chemical substance element. Having the same issuance of protons, they develop the same number of electrons, thereof the same chemical properties. When they subscribe to different numbers of neutrons, they are called isotopes. Each isotope of a incline element is designated by the full number of its nucleons, i.e. protons plus neutrons. For instance, Uranium-238 and Uranium-235 both(prenominal) consider 92 electrons. Their nuclei have 92 protons. Isotope 238 has 146 neutrons, and Uranium-235 has 143 neutrons. Radiations from radioactivity There are 3 types of radiations check to three types of radioactivity.

Alpha radioactivity corresponds to the dismission of a atomic number 2 nucleus, a oddly stable structure consisting of 2 protons and two neutrons, called an a particle. Beta radioactivity corresponds to the transformation, in the nucleus: -Either of a neutron into a proton, beta- radioactivity, characterized by the run of an electron e- - Or of a proton into a neutron, beta+ radioactivity, characterized by the emission of an anti-electron or positron e+. It only appears in artificial radioactive nuclei produced by nuclear reactions. Gamma radioactivity, unlike the other two, is not related to a break of the nucleus. It... If you want to fall a full essay, target it on our website: Orderessay

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