Atoms are drawn to scale with each other (radius in pm); shells are a simplified Bohr-style picture. The lanthanides (57 to 71 except La) and period 7 are left off to keep the table readable.
Predict first. After you check (or ask for the answer), the picture sorts the atoms or ions and shows the shell and Zeff reasoning.
Your job
Wrong picks are fine here. Each one tells you why.