What is an electron? A. A negative particle inside the nucleus

B. A negative particle outside the nucleus

C. A positive particle inside the nucleus

D. A particle inside the nucleus that has no charge

B. A negative particle outside the nucleus

Explanation:

Electrons are very small particles orbiting outside of the nucleus of an atom. They carry negative charges.

The nucleus only contains protons and neutrons. Protons are positive, and neutrons have no charge (i.e. neutral)

the device is called “ rocket engine”