Предмет: Физика, автор: vchumicheva18

1. Дан атом ВаНд определить число протонов и нейтронов в ядре и количество электронов в атоме.
число протонов
число нейтронов
число электронов
2. В какой изотоп превратился радиоактивный торий 238Th , испытав ба-распадов и 4 B-распада.
90
СРОЧНО НАДО

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Ответы

Автор ответа: marzhanserikova8

Ответ:

Какой класс???????????

vchumicheva18: 9 класс

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