Treść zadania
Autor: Hartkors Dodano: 10.1.2011 (17:36)
Podaj skład jąder atomowych izotopów pierwiastków : 238U... 234U.. 224Ra
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Konto usunięte 10.1.2011 (18:21)
a)238U
protonów=92
elektronów=92
neutronów=238-92=146
b)234U
protonów=92
elektronów=92
neutronów=234-92=142
c)224Ra
protonów=88
elektronów=88
neutronów=224-88=136
To jest najłatwiejszy dział chemii.Oczekuję na najlepsze.
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