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Recently, N.~Singh and S.~Aggarwal [Pramana -- J. Phys. 89 (2017) 79] havereported energies and lifetimes for 127 levels of three Ne-like ions, namelyCu~XX, Zn~XXI and Ga~XXII. For the calculations they have adopted twoindependent atomic structure codes, i.e. GRASP and FAC, and have concluded thatboth codes give comparable energies. However, we find that the differencesbetween the two sets of energies are up to 1.5~Ryd (over 1.6$\times$10$^5$wavenumbers) for many levels, and for all three ions. In the absence of otheravailable theoretical or experimental data, it becomes difficult to know whichset of energies is more accurate. Through our calculations with the same codewe demonstrate that their listings from the FAC calculations are incorrect. Afew more anomalies noted in their tabulated results are also highlighted.

Comment on "Energy levels and radiative rates for Ne-like ions from Cu to Ga" by N.~Singh and S.~Aggarwal [Pramana -- J. Phys. 89 (2017) 79]