It is shown that the data used by Hafez and Talukder (Astrophys. Space Sci. 359(1):1, 2015) contradicts the laboratory experiments. It is also rigorously shown here that the used ideal plasma model is not valid for the plasma in compact astrophysical objects such as white dwarf stars. Since, the data used by Hafez and Talukder (Astrophys. Space Sci. 359(1):1, 2015) is yet not reported in any authentic literature, therefore, their results are neither applicable to astrophysical plasmas nor to the laboratory plasmas.