Предмет: Физика, автор: li1520

ФИЗИКА
Ребята, пожалуйста, срочно ПОМОГИТЕ, пожалуйста​

Приложения:

Ответы

Автор ответа: armannn04
1

Ответ:

Смотри ниже

Объяснение:

Буду записывать все ответы в формате: атомная масса/порядковый номер!

1)

а) 17/8 O

б) 24/11 Na

в) 6/3 Li

г) 14/7 N

2)

а) 238/92 U = 234/90 Ra + 4/2 He

б) 209/82 Pb = 209/83 Bi + 0/-1 e

3)

a) 10/5 B + 1/0 n = 7/3 Li + 4/2 He

б) 55/25 Mn + 1/1 H = 55/26 Fe + 1/0 n

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