Question

a particle that travels around the nucleus of an atom in orbitals is called a(n)
quark.
proton.
neutron.
electron.

Explanation:

• Quarks are fundamental particles that make up protons and neutrons.
• Protons are positively - charged particles located in the nucleus of an atom.
• Neutrons are neutral particles also located in the nucleus of an atom.
• Electrons are negatively - charged particles that travel around the nucleus of an atom in orbitals.

Answer:

electron.