Предмет: Химия, автор: evakushnir0206

Обери правильні твердження:
• властивості хімічних елементів знаходяться в періодичній залежності від зарядів
• ядер їх атомів атом складається з негативно зарядженого ядра і електронів
• усі атоми хімічного елемента мають однакове число
• нейтронів у ядрі нуклони - ядерні частинки
• в схемі будови атома Натрію 10 електронів і 11
• протонів тритій, дейтерій, протій - ізотопи Гідроген

evakushnir0206: дуже дякую

Ответы

Автор ответа: anna281658

Ответ:

2, 5 якщо чесно точно не знаю(

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