Question

Which of the following is a subatomic particle located outside the nucleus of

an atom?
A. Neutron
B. Both the proton and neutron
C. Electron
D. Proton

Answer 1

C. Electron

reason:

All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.