The mass number is the mass of one atom of an element, measured in atomic mass units, or amus. The mass number is important because it tells us how many neutrons and protons are in an atom.Answer and Explanation: The mass number of calcium is 40amu. The mass number is equal to the...
Isotopes:Calcium has 19 Isotopes whose half-lives are known, with mass numbers 35 to 53. Naturally occurring calcium is a mixture of six isotopes and they are found in the percentages shown:40Ca (97%),42Ca (0.6%),43Ca (0.1%),44Ca (2%),46Ca (0.004%) and48Ca (0.2%). References ...
46Ca and 48Ca are the first "classically stable" nuclides with a six-neutron or eight-neutron excess respectively. Although extremely neutron-rich for such a light element, 48Ca is very stable because it is a doubly magic nucleus, having 20 protons and 28 neutrons arranged in closed shells....
The most abundant isotope,40Ca, has a nucleus of 20 protons and 20 neutrons. This is the heaviest stable isotope of any element known that has equal numbers of protons and neutrons. In supernova explosions, calcium is formed from the reaction of carbon with various numbers of alpha particles...
–Number of Electrons 20 [3] –Number of Neutrons 20 [3] –Number of Protons 20 [3] Energy levels [3] –First Energy Level 2 –Second Energy Level 8 –Third Energy Level 8 –Fourth Energy Level 2 Radius of atom –Atomic Radius 2.31 Å [1] –Covalent Radius 1.74 Å [1] Ele...