Atoms have a surrounded by

A. positive electron, negative nuclei
B. negative electron, positive nuclei
C. negative nucleus, positive electrons
D. positive nucleus, negative electrons

Label the following as inner or outer planets; a) has 67 moons made mostly of hydrogen and helium b) has rings c)no moons, high volcanic activity d) known as the red planet, has 2 moons e) very thin atmosphere, moons or rings