um átomo X é constituído por dois 26 prótons e possui o número de nêutrons igual a 30 qual a alternativa correta de seu número de número atômico z e seu número de massa a respectivamente
Respostas
Resposta:
Número atômico (Z) é 26
O número de massa é igual ao número de prótons mais o número de Nêutrons
A=Z+N
A=26+30
A=56
Explicação:
opção correta é 26 e 56
Resposta:
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Explicação:
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