Related Clues:

• Periodic Table datum (Abbr.)
• Periodic table stat.
• 47, for silver: Abbr.
• '___ additional cost!'
• ''___ cost to you!''
• __ extra cost
• -- cost (free)
• Chem. datum
• No. for Na or Ni
• ''___ extra cost to you''
• 27 for 56-Across, e.g.: Abbr.
• ''___ extra charge!''
• -- charge (free)
• Fig. on a periodic table
• Periodic table fig.