Matéria: História
Autor: marcellevictoriacava
Perguntado 5 anos atrás

Questão 04
Qual o número de massa (A) de um átomo que possui o número atômico (Z)
igual a 20 e o número de nêutrons (N) igual a 25:
a) 5
b) 45
C) 25
d) 20
e) 35

Respostas

respondido por: gustavomarques1608

Resposta:

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Explicação:

marcellevictoriacava: ;-;

gustavomarques1608: ;___________________________________________________________________________________________________________________________________________________________________;

kayquegabiel1817: ;-;

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