Isotopic Spin and Odd-OddN=ZNuclei

The lowest-lying states of isotopic spin $T=0\mathrm{}$ and $T=1\mathrm{}$ are surveyed for odd-odd nuclei with $N=Z$ by considering $\beta$-decay schemes and Coulomb energy differences. For $A\ge 26$ the lowest $T=0\mathrm{}$ and $T=1\mathrm{}$ states appear to be very close together. The analysis permits certain predictions regarding the decay schemes of of these nuclei. Further experimental information is needed on the higher members of this series, from ${\mathrm{Sc}}^{42}$ to ${\mathrm{Cu}}^{58}$. Predicted $\beta$-decay schemes for some corresponding $Z=N+2\mathrm{}$ nuclei are also summarized.