$\backslash (\backslash$mathrm$\{$A$\}^\{20\}\backslash$mathrm$\{$Ne$\}\backslash )($neon$-20)$ nucleus has $10$ protons and $10$ neutrons, for a total of $20$ nucleons. $\backslash (\backslash$mathrm$\{$A$\}^\{160\}\backslash$mathrm$\{$Dy$\}\backslash )($dysprosium$-160)$ nucleus has $66$ protons and $94$ neutrons, for a total of $160$ nucleons.

Compared to a $\backslash (\{\}^\{20\}\backslash$mathrm$\{$Ne$\}\backslash )$ nucleus, a $\backslash (\{\}^\{160\}\backslash )$ Dy nucleus has double the radius and a greater density. $8$ times the radius and a greater density. double the radius and the same density. $8$ times the radius and the same density. double the radius and a lower density.