Which subatomic particle orbits the nucleus in an atom?

• A. Electron
• B. Proton
• C. Positron
• D. Neutron

Answer: (A)

Verified step by step guidance

1. Recall the basic structure of an atom, which consists of a nucleus and particles surrounding it.
2. Understand that the nucleus contains protons and neutrons, which are tightly bound together.
3. Recognize that electrons are the subatomic particles that move around or 'orbit' the nucleus in regions called electron clouds or shells.
4. Note that protons and neutrons do not orbit the nucleus; they reside inside it.
5. Identify that positrons are not typically part of a stable atom; they are the antimatter counterparts of electrons and do not orbit the nucleus in normal atoms.