Trong các hạt nhân nguyên tử: \(_{\text{2}}^{\text{4}}\text{He; }_{\text{26}}^{\text{56}}\text{Fe; }_{\text{92}}^{\text{238}}\text{U}\) và \(_{\text{90}}^{\text{230}}\text{Th,}\)hạt nhân bền vững nhất là
A.\(_{\text{26}}^{\text{56}}\text{Fe}\)
B.\(_{\text{92}}^{\text{238}}\text{U}\)
C.\(_{\text{2}}^{\text{4}}\text{He}\)
D.\(_{\text{90}}^{\text{230}}\text{Th}\)
A.\(_{\text{26}}^{\text{56}}\text{Fe}\)
B.\(_{\text{92}}^{\text{238}}\text{U}\)
C.\(_{\text{2}}^{\text{4}}\text{He}\)
D.\(_{\text{90}}^{\text{230}}\text{Th}\)
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Hóa Học lớp 12
