cu630
cu630 refers to copper isotope 63. Isotopes are atoms of the same element that have different numbers of neutrons. Copper has two stable isotopes, copper-63 (cu630) and copper-65. Copper-63 is the more abundant of the two, making up approximately 69.15% of natural copper.
Copper-63 has an atomic mass of about 62.9296 atomic mass units. Its nucleus consists of 29 protons
The abundance of cu630 in natural copper means that most copper encountered in everyday life is primarily