Question

what particle in the atom has a negative charge to cancel out the proton’s positive charge and circle around in its \shell\?
atomic number
proton
neutron
electron

Explanation:

To solve this, we analyze each option:

• "atomic number" is the number of protons in an atom, not a particle with charge.
• "proton" has a positive charge, not negative.
• "neutron" has no charge (neutral).
• "electron" has a negative charge and orbits the nucleus in shells, balancing the proton's positive charge.

Answer:

D. electron