A ${}^{40}_{19}\mathrm{K}$ izotóp $\beta^-$-bomlással átalakul. Milyen izotóp keletkezik?
A) \({}^{39}_{18}\mathrm{K}\)
B) \({}^{39}_{18}\mathrm{Ar}\)
C) \({}^{40}_{20}\mathrm{Ca}\)
D) \({}^{40}_{18}\mathrm{Ar}\)
A) \({}^{39}_{18}\mathrm{K}\)
B) \({}^{39}_{18}\mathrm{Ar}\)
C) \({}^{40}_{20}\mathrm{Ca}\)
D) \({}^{40}_{18}\mathrm{Ar}\)