What observations are needed to tell whether an earth-like planet is geologically alive or dead?

the following sets of characteristics describe what we know about the outer plants is c. rocky surface, closet to the sun and larger in size

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.