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
Табурет складной "Моби". Табурет изготовлен из пищевой пластмассы и абсолютно безопасен для детей, легко собирается и моется. Яркая цветовая гамма табурета479 рубРаздел: Стульчики
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|Ножи Fellowes, для резаков NEUTRON и ELECTRON, прямая резка |