(a)
Interpretation:
The
Concept Introduction:
Beta decay reaction:
Beta particles are electrons (electrons with positive electric charge). Beta decay occurs when in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other.
(a)

Answer to Problem 10C.7E
The nuclear equation is,
Explanation of Solution
Sodium-11 decays into magnesium-12 by emitting an electron particle.
The nuclear equation is,
(b)
Interpretation:
The change in energy that accompanies the decay has to be given.
Concept Introduction:
Nuclear binding energy and the mass defect:
Nuclear binding energy is the minimum energy that would be required to disassemble the nucleus of an atom into its component parts. These component parts are neutrons and protons which are collectively called nucleons. The mass of an atomic nucleus is less than the sum of the individual masses of the free constituent protons and neutrons according to Einstein’s equation
The rate of energy is calculated using the formula,
Where
c is the velocity of the light
(b)

Answer to Problem 10C.7E
The change in energy that accompanies the decay is
Explanation of Solution
Given,
The mass of sodium is
The mass of magnesium is
The mass of electron is
The change in mass can be calculated as,
The change in energy can be calculated as,
The change in energy is
(c)
Interpretation:
The change in energy per nucleon has to be given.
Concept Introduction:
The binding energy per nucleon (BEN) is defined by the average energy required to remove an individual nucleus from the nucleus.
Where
A is the mass number of the atom.
(c)

Answer to Problem 10C.7E
The binding energy per nucleon is
Explanation of Solution
Given,
The change in energy is
The mass umber of the sodium atom is
The binding energy per nucleon can be calculated as,
The binding energy per nucleon is
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Chapter 10 Solutions
ACHIEVE/CHEMICAL PRINCIPLES ACCESS 2TERM
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