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$^{a}$Ref. [7]. $^{b}$Ref. [6]. $^{c}$Ref. [33]. $^{d}$Ref. [4]. $^{e}$Ref. [9]. $^{f}$Ref. [10]. $^{g}$Ref. [15]. 

$^{h}$Ref. [34]. $^{i}$Ref. [20]. $^{j}$Ref. [5]. $^{k}$Ref. [19]. $^{l}$Ref. [12]. $^{m}$Ref. [13]. $^{n}$Ref. [35]. 

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large distances, all these three states show similar behavior with the ground state having greater charge density and decaying rather slowly than the two excited states; $^{5}$P e dying out fastest. Similar radial density plots for all three excited states of Be − are given in Fig. 1(b). In the vicinity of nucleus, the $^{4}$P $^{e}$, $^{4}$S o states show similar behavior and have much larger charge densities compared to the $^{6}$S o state, again presumably because the former two have two core 1s electrons while the latter has only one. At the intermediate distance after the first minimum and up to r =3 . 5 a.u., this situation changes with $^{6}$S o having the largest charge density. Also the $^{4}$S $^{o}$, $^{4}$P e states branch out in this region with the latter showing slightly larger peak value than the former. After that at larger distances, all the three states decay in a similar pattern with $^{4}$S o having higher values and oozing out slowly than the other two and $^{6}$S o decaying out first. These behaviors in electron density are also reflected 

