Question

Which subatomic particle has negligible mass and travels around outside the nucleus? proton neutron electron orbital

Answer 1

The subatomic particles you describe are Electrons.

Answer 2

Answer: Electron

Explanation: Proton has positive charge like nuclues and neutrons are charge less.

Both proton and neutrons are present in nuclues.

While Electrons are revolving around the nucleus in a circular path called Orbit.