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bininhalinda
@bininhalinda
October 2020
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Um íon x-¹ tem 18 eletrons e 20 nêutrons. Qual é o seu n° atômico, e o seu n° de massa?
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nandofilho10
X⁻ < tem 18 elétrons
logo , o número atômico é 17
e o número de massa = 17 + 20 =
37 u
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logo , o número atômico é 17
e o número de massa = 17 + 20 = 37 u