Possible Clues:

• It constitutes 78 percent of the atmosphere
• Chief component of air
• Funny ring tone - it's a gas
• Element from the North diminished and re-expanded
• This gas oxygen? NO!
• Turning back negotiable gold to money could be quite a bit of inspiration
• Neon grit (anag.)
• Gas money, that's remitted, little man held back for example
• Sounds as if night starts with N
• With N it's great gas!