Clue: Unstable particle

Answer: 2 possible answers to Unstable particle. From 4 to 5 leters.

Unstable particle answers with 4 characters:

• MUON

Unstable particle answers with 5 characters:

• MESON

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Similar Clues:

• Unstable particles with great mass (HYPERONS with 8 letters)
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• ___ particle (unstable meson) (PSI with 3 letters)
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• Particle that's got a charge (ION with 3 letters)
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