It's the lightest known stable subatomic particle

Below you can find the It's the lightest known stable subatomic particle Jeopardy Words Answer. The answer to It's the lightest known stable subatomic particle has 8 letters. This clue belongs to the Physical science category and is part of Jeopardy Word Level 1639. If you scroll near the bottom you will find other clues and answers part of level 1639