Answer:
Protactinium
Explanation:
the atomic number lines up with the number of protons and electrons an element has.
B. Most potential energy
brainest plz
B
the formula is d=m/v
both sides xV
dv=m
Element Atomic Number Atomic Mass
Nickel 27 58.6934
Cobalt 28 58.9332
Copper 29 63.546
Zinc 30 65.39
