Nuclear spin quantum numbers of H, D and T have

*Nuclei with odd number of both protons and neutrons have spin quantum  numbers that are positive integers ${\therefore }_1^{2}D=1$ The nuclei with odd/even and even/odd No. of protons and neutrons have spin quantum no’s that are half integral ${ }_1^{1}H{,}_1^{3}H\Rightarrow 1=\frac{1}{2}$