Atomic number and mass number of calcium
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. Mas s number is the count of protons plus neutrons.The number of neutrons can vary, but the number of protons must always be equal to 20 for a calcium isotope. Therefore, the mass number of this calcium isotope will be mass number A 20 protons 20 neutrons 40 You are dealing with the calcium40 isotope, 2040 Ca . atomic number and mass number of calcium
Calcium is a chemical element with symbol Ca and atomic number 20. An alkaline earth metal, calcium is a reactive silvery metal that forms a dark oxidenitride layer when exposed to air.