Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
Calculate the binding energy per mole of nucleons for iron-56. Masses needed for this calculation (in g/mol) are
Figure 25.4 Relative stability of nuclei. Binding energy per nucleon for the most stable isotope of elements between hydrogen and uranium is plotted as a function of mass number. (Fission and fusion are discussed in Sectionc25.6.)
Interpretation:
Binding energy per nucleon of Iron-56 has to be calculated and compared with the given figure.
Concept introduction:
Binding energy is the energy required to separate the nucleus of an atom into proton and neutron. Binding energy is given by
Binding energy per nucleon
The given masses are,
An iron-56 nucleus has 26 protons and (56-26) =30 neutrons. The total mass is thus,
The total mass of the iron nucleus is =56.44938
On calculating the mass defect,
Here,
M=Total mass (number of protons-number of neutrons)
m=Actual mass (number of neutrons-number of protons)
Binding energy
Chapter 25 Solutions
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