Related Clues:

• Smallest component of an element
• One is depicted in the Emmy statuette
• Wee bit of physics
• It can be viewed with a scanning tunneling microscope
• Bit that can be split
• Molecule portion
• Power plant part
• Nuclear apparatus for producing energy
• One of trillions in a single human body
• Physics class topic
• Thing that might decay
• Little bit of matter
• Nuclear-energy source
• Cyclotron fodder
• Fundamental matter?