Related Clues:

• Negatively charged particle
• It may have an extra electron
• Physics subject
• See 41-Down
• John Paul II, e.g.
• Hydrolysis atom
• Fishing need
• Gondola propeller
• Tent support
• Ca++ or Cl-, e.g.
• See 61-Down
• Explorer's quest, with 'the'
• Chopin, for one
• End of the world?
• Peary's goal