\begin{table}%t2
\caption{Experimental energy levels and calculated Land\'e $g$-factors in Ra~II. For this ion, the
differences $\Delta E = E_{\rm exp}  -  E_{\rm calc} = 0$~cm$^{-1}$ and the eigenvector purities are equal to 100\% for all the levels (see the text).} \label{table2}
%\centerline
{\begin{tabular}{lcrc}
\hline \hline\noalign{\smallskip}
Designation$^a$ & $J$ & $E_{\rm exp}^a$ & $g^b$ \\
            &   & (cm$^{-1}$)   &  \\
\noalign{\smallskip}\hline\noalign{\smallskip}
\underline{\bf Even~parity} \\
7s~$^2${S} & 1/2 &     0.00 & 2.002 \\
6d~$^2${D} & 3/2 & 12~084.38 & 0.800 \\
6d~$^2${D} & 5/2 & 13~743.11 & 1.200 \\
8s~$^2${S} & 1/2 & 43~405.01 & 2.002 \\
7d~$^2${D} & 3/2 & 48~744.04 & 0.800 \\
7d~$^2${D} & 5/2 & 49~240.48 & 1.200 \\
9s~$^2${S} & 1/2 & 59~165.23 & 2.002 \\
8d~$^2${D} & 3/2 & 61~734.88 & 0.800 \\
8d~$^2${D} & 5/2 & 61~973.82 & 1.200 \\
5g~$^2${G} & 7/2 & 64~150.65 & 0.889 \\
5g~$^2${G} & 9/2 & 64~150.65 & 1.111 \\
10s~$^2${S}& 1/2 & 66~837.88 & 2.002 \\
9{d}~$^2${D} & 3/2 & 68~264.07 & 0.800 \\
9{d}~$^2${D} & 5/2 & 68~394.86 & 1.200 \\
6g~$^2${G} & 7/2 & 69~560.85 & 0.889 \\
6g~$^2${G} & 9/2 & 69~560.85 & 1.111 \\
11s~$^2${S}& 1/2 & 71~172.92 & 2.002 \\
10d~$^2${D}& 3/2 & 72~043.06 & 0.800 \\
10d~$^2${D}& 5/2 & 72~123.78 & 1.200 \\
 7{g}~$^2${G}& 7/2 & 72~824.37 & 0.889 \\
 7{g}~$^2${G}& 9/2 & 72~824.37 & 1.111 \\
12{s}~$^2${S}& 1/2 & 73~863.1~ & 2.002 \\
11{d}~$^2${D}& 3/2 & 74~434.04 & 0.800 \\
11{d}~$^2${D}& 5/2 & 74~488.51 & 1.200 \\
 8{g}~$^2${G}& 7/2 & 74~941.91 & 0.889 \\
 8{g}~$^2${G}& 9/2 & 74~941.91 & 1.111 \\
12{d}~$^2${D}& 3/2 & [76047]  & 0.800 \\
12{d}~$^2${D}& 5/2 & 76~080.74 & 1.200 \\
 9{g}~$^2${G}& 7/2 & 76~393.12 & 0.889 \\
 9{g}~$^2${G}& 9/2 & 76~393.12 & 1.111 \\
10{g}~$^2${G}& 7/2 & 77~431.31 & 0.889 \\
10{g}~$^2${G}& 9/2 & 77~431.31 & 1.111 \\
11{g}~$^2${G}& 7/2 & 78~195.21 & 0.889 \\
11{g}~$^2${G}& 9/2 & 78~195.21 & 1.111 \\
\underline{\bf Odd~parity}  \\
 7{p}~$^2${P}$^{\circ}$& 1/2 & 21~351.20 & 0.666 \\
 7{p}~$^2${P}$^{\circ}$& 3/2 & 26~208.86 & 1.334 \\
 5{f}~$^2${F}$^{\circ}$& 5/2 & 48~987.98 & 0.857 \\
 5{f}~$^2${F}$^{\circ}$& 7/2 & 49~272.31 & 1.143 \\
 8{p}~$^2${P}$^{\circ}$& 1/2 & 50~606.01 & 0.666 \\
 8{p}~$^2${P}$^{\circ}$& 3/2 & 52~392.05 & 1.334 \\
 6{f}~$^2${F}$^{\circ}$& 5/2 & 59~515.48 & 0.857 \\
 6{f}~$^2${F}$^{\circ}$& 7/2 & 59~815.59 & 1.143 \\
 9{p}~$^2${P}$^{\circ}$& 1/2 & [62~977]  & 0.666 \\
 9{p}~$^2${P}$^{\circ}$& 3/2 & 63~410.41 & 1.334 \\
 7{f}~$^2${F}$^{\circ}$& 5/2 & 66~521.86 & 0.857 \\
 7{f}~$^2${F}$^{\circ}$& 7/2 & 66~691.22 & 1.143 \\
 \noalign{\smallskip}
 \hline
\end{tabular}}
\smallskip
 $^a$  From Moore (\cite{Moore1971}). Energies between brackets are calculated values obtained in the present work. $^b$ Land\'e factor as calculated in the present work.
\end{table}