It is A. Barium
Explanation: I did that already
B. False
Stability is determined by the ratio of neutrons and protons. Electrons are not in nucleus.
Transform boundaries are places where plates slide sideways past each other. At transform boundaries lithosphere is neither created nor destroyed. Many transform boundaries are found on the sea floor, where they connect segments of diverging mid-ocean ridges. California's San Andreas fault is a transform boundary. So its true
