7 wave function, [3] used a 320-term CI, [7] used 7-50 angular spin components and 541–1298 linear parameters for the former, and it is gratifying that current results exhibit a rather small and acceptable discrepancy. The next even-parity $^{5}$P e state has been investigated only recently [7], and our energy shows very good matching with theirs. They used a saddle-point restricted variational method with accurate multiconfigurational wave functions built from STO basis sets. As already mentioned, Be − has no [He]2s $^{2}$2p $^{2}$P ground state; and three metastable bound states found in the discrete spectrum are given in this table. [He]2s2p 2 $^{4}$P $^{e}$, [He]2p $^{3 4}$S o and 1s2s2p $^{3 6}$S o states lie below the Be 1s $^{2}$2s2p $^{3}$P, 1s$^{2}$2p$^{2 3}$P and 1s2s2p2 $^{5}$P excited states. The X-only energies again matching excellently with the HF results [15]. A large number of accurate and sophisticated theoretical results exist for the correlated case. For example CI calculation of [15] included single, double, triple and quadrupole subshell excitations. The first two states have also been studied through a method of full core plus correlation and restricted variation approach [20]. Our XC energies show better agreements with literature results in this case than those for Li $^{−}$; however once again falling below the reference values for all the three states as in Li $^{−}$. Also a combined Rayleigh-Ritz and method of restricted variation result exists for the $^{6}$S o state [21]. Next, two calculated transition wavelengths (in nm) of Li − 1s2s2p $^{2 5}$P e → 1s2p $^{3 5}$S o and Be − [He]2s2p $^{2 4}$P e → [He]2p $^{3 4}$S o are reported in Table II. A variety of theoretical and ex- perimental results have been published, which are given for comparison. Note that the latter includes relativistic effects, whereas present calculation is nonrelativistic. Generally there seems to be good agreement for these quantities among the literature values. The present results are lower than the experimental values of [9] and [12] by 0.891% and 0.438% respec- tively for Li − and Be $^{−}$. In parentheses we give the corresponding wavelengths calculated from the X-only results. As expected they show considerable difference. Now Fig. 1(a) depicts the single-particle radial density plots for Li − ground state [He]2s 2 $^{1}$S $^{e}$, and two excited states 1s2s2p $^{2 5}$P $^{e}$, 1s2p $^{3 5}$S $^{o}$. Close to the nucleus, the latter two states making a family of similar radial densities, possess considerably smaller charge density than the ground state, mainly due to the presence of two core 1s electrons in the ground state and one 1s electron in the latter two. However this scenario reverses in the region enclosed between the first minimum and up to r = 4 a.u., where the $^{5}$P e and $^{5}$S o states show larger values than the $^{1}$S e state. The two excited states also appear to separate out in this intermediate region with $^{5}$P e showing larger peak value than the $^{5}$S $^{o}$. After that, at