Fill in the missing information:

$\backslash$table$[[$symbol$,\backslash$table$[[$atom or ion?$],[$check all that apply$]],\backslash$table$[[$number of$],[$protons$]],\backslash$table$[[$number of$],[$electrons$]],],[,$neutral atom,cation,anion,$15,16],[,$neutral atom,cation,anion,$21,21],[Z{r}^{3+},$neutral atom,cation,anion,,$]]$