“…In Table 2 , we have gathered the radial integral values of n d k ( n + 1)s -> n d k ( n + 1)p transitions, obtained semi-empirically in our previous works, using the same code, for singly ionized atoms, such as V II [21] , Zr II [22] , Nb II [23] , Rh II [24] , Hf II [25] to which we have added those given by Ruczkowski et al for Sc II [16] and Ti II [26] . It is easy to observe that these transition radial integral values decrease with the filling of n d-shells for the same principal quantum number; this behaviour is different for instance from established general trends in the hyperfine structure analyses: increasing (contrary to the transition radial integral which is rather decreasing) of the most influential s-monoelectronic hfs parameter divided by g I = μ I / I , a 10 ns / g I versus atomic number Z [27] . These remarks may serve, with resorting to any calculations, as hints at the starting of oscillator strength fitting procedure since we can use the deduced interval of our new investigated transition radial integral values with the help of those known for other ions and then we can conclude if our obtained data in the first stage are encouraging or not to carry on with our fitting procedure.…”