Good evening, cp2k experts. I encountered an unusual artifact: while optimizing the geometry of various ions in an aqueous environment (using SCRF methods), I found that for the Na cation, the electronic density on regular grids is -7.9999991679. This deviation occurs in all models where the Na+ ion is used. This problem does not occur for lithium and potassium (-2.0000000000 and -8.0000000000, respectively). Is this a serious artifact, or can it be ignored? -- You received this message because you are subscribed to the Google Groups "cp2k" group. To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:cp2k+unsubscribe@googlegroups.com">cp2k+unsubscribe@googlegroups.com</a>. To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/cp2k/3c7ad038-fe89-4d4c-9d9e-a0399c728c6bn%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/cp2k/3c7ad038-fe89-4d4c-9d9e-a0399c728c6bn%40googlegroups.com</a>.