Nucleons The term nucleon refers to the particles found in the nucleus of an ato

Question

Nucleons
The term nucleon refers to the particles found in the nucleus of an atom, namely protons and neutrons. A single hydrogen atom (one proton plus one electron) has a mass of 1.007825 amu. A single neutron has a mass of 1.008665 amu. Note that amu stands for "atomic mass unit" and is sometimes abbreviated with the symbol u.

Mass Defect
The total mass of the individual nucleons in an atom is always greater than the actual measured mass of the atom. The difference is called the mass defect.

Binding Energy
The mass defect of an atom corresponds to an amount of energy called the binding energy. Binding energy can be calculated using Einstein's equation, E=mc2., where E is energy in joules, m is mass is kilograms, and c is the speed of light, 2.998

Explanation / Answer

Part A:  mass defect of the fluorine nucleus 19 9F = 1.007825 amu.*9 + 1.008665 amu. *10 = 19.157-18.998403 amu = 0.1586 amu

Part B:  the binding energy EB of the fluorine nucleus 19 9F = 0.1586*(3*10^8)^2 = 148.14 MeV

Part C: the binding energy per nucleon of the fluorine nucleus 19 9F = 7.797 MeV

Part D : the mass defect of the helium nucleus 42He.= 1.007825 amu.*2 + 1.008665 amu. *2-  4.002603u. =0.0304 amu

Part E:  the binding energy EB of the helium nucleus 42He = 0.0304*(3*10^8)^2 = 28.386 MeV

Part F: the binding energy per nucleon of the helium nucleus 42He = 7.0965 MeV

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