Things to Know:
Things to Know
Fill in the Chart:
Fill in the Chart Element Name Symbol Atomic Number Atomic Mass Mass Number Number of Protons Number of Neutrons Number of Electrons Rubidium-39 Rb-39 37 85.4678 39 37 2 37 37 Rb 85.4678 Rubidium The element shown is an isotope, meaning it has a different number of neutrons than the original element.