Question

Which of the following statements about subatomic particles best characterizes electrons?

positive charge, light, circling the nucleus
no charge, heavy, found in nucleus
negative charge, light, circling the nucleus
negative charge, heavy, circling the nucleus

Answer 1

This you just have to remember, read your textbook -_-

Electrons have negative charge, in contrast with protons. It's going around the nucleus in orbitals, and their mass is roughly 1/1630 that of proton's, but they occupy 99.99% of the whole atom.

From this information, you can try to figure out the answer for yourself :)