What is the name of the particle that circles the nucleus of an atom

Electrons are the particles that circles the nucleus of an atom.

Explanation: Each atom has its nucleus. Nucleus present at the centre of the atom.

Inside the nucleus protons and neutrons are present. Protons has positively charged particles on the other hand Neurons are neutral they have no charge.

So, the positive charge of protons make nucleus a positively charged.

Electrons are negatively charged particles. They circles around the positively charged nucleus. Positive charge of nucleus make negatively charged electrons to circle around nucleus.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.