Calcium mass number 40
Calcium has atomic number of 20, an atomic weight of 40. 078 and an mass numbers of 40 48 inclusive in its isotopes. Atomic number is the count of protons in the nucleus.Mar 19, 2009 Best Answer: Calcium40 has an atomic weight of approx. 40 (obviously) To find the number of neutrons, you would subtract the number of protons that a calcium atom has, which is always going to be 20, regardless of the mass of the particular calcium isotope. calcium mass number 40
Calcium carbide (CaC 2) Calcium chloride (CaCl 2) Calcium phosphide (Ca 3 P 2) Interesting facts: It is the 5th most abundant element found in the earth's crust. It was prepared as lime by the Romans who called it calyx, but it wasn't discovered until 1808. It is not found free in nature. It can be purified is not a soft silverywhite metal.