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Geography, 17.11.2020 09:40 deaishaajennings123

Определи, являются утверждения о свойствах фундаментальных частиц атома истинными или ложными. 1. Электрон – элементарная частица, имеющая заряд +1.
2. Нуклоны – протоны и нейтроны – имеют равную массу.
3. Число электронов в атоме равно числу нейтронов.

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