The number of neutrons is the neutron number and determines the isotope of an element. For example, the carbon-12 isotope has 6 protons and 6 neutrons, while the carbon-14 isotope has 6 protons and 8 neutrons. The number of protons in a nucleus is the atomic number and defines the type of element the atom forms. Neutrons are usually found in atomic nuclei. The nuclei of most atoms consist of protons and neutrons, which are therefore collectively referred to as nucleons. The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.
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Lambert M. S.
Книга по Требованию
Копилка-раскраска "Дракончик". Набор для творчества. Копилка-раскраска. Пластиковая копилка легкая, приятная на ощупь, не бьется при падении и ее легко раскрашивать. В349 рубРаздел: Копилки
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The book may be very useful to researchers facing the task to upgrade a legacy diffusion code, but may also well serve as a concise overview of modern transport-theoretical techniques.
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The basic underlying physical assumption is that the observed variability of X-ray luminosity originates as the result of local fluctuations of the mass accretion rate, at all radii in the disk, that diffusively propagate outward.
|Ножи Fellowes, для резаков NEUTRON и ELECTRON, прямая резка |