Which subatomic particle has a negative charge and is found outside the nucleus of an atom?

• A. Alpha particle
• B. Electron
• C. Proton
• D. Neutron

Answer: (B)

Verified step by step guidance

1. Recall the three main subatomic particles: protons, neutrons, and electrons.
2. Understand that protons have a positive charge and are located inside the nucleus.
3. Know that neutrons have no charge (are neutral) and are also located inside the nucleus.
4. Recognize that electrons have a negative charge and are found outside the nucleus in electron clouds or orbitals.
5. Therefore, the subatomic particle with a negative charge found outside the nucleus is the electron.