The 2Z-N correlations are indication a for the deuteron-triton (d-t) c
luster structure of most of the nuclei. For N = Z nuclei this approach
indicates deuteron (d) clusters only. The space-dependent Schrodinger
equation for neutron and proton in the same shell for N = Z nuclei sh
ows that pan of the time these particles behave like single particles
and part of the time as a deuteron clusters. The 2Z-N correlations are
used to predict some nuclear properties of many actinides.