# Stability of the Nucleus (College)

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## Stability of the Nucleus

1.

Which of the following describes the difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons?

- mass loss
- mass gain
- mass defect
- binding mass

2.

What is represented by c in the equation for nuclear binding energy?

- specific heat capacity
- temperature, in ºC
- capacitance
- the speed of light

3.

Which of the following correctly describes the nuclear binding energy?

- The energy needed to keep the nucleus together
- The energy released when a nucleus is formed from neutrons and protons
- The energy released when a nucleus is broken apart
- (a) and (c)

4.

Which of the following elements represents the nuclide with the highest energy per binding nucleon?

- iron-56
- barium-137
- manganese-56
- cesium-133

5.

Which of the following equations correctly relates the nuclear binding energy to the mass defect?

- [math]E=mc^2[/math]
- [math]∆E=m∆c^2[/math]
- [math]∆E=∆m∆c^2[/math]
- [math]∆E=∆mc^2[/math]

6.

Which of the following units is equivalent to 1 joule of energy?

- [math]{"amu"•"m"}/{"s"^2}[/math]
- [math]{"amu"•s^2}/{"m}[/math]
- [math]{"kg"•"m"}/{"s"^2}[/math]
- [math]{"s"^2•"m"}/{kg}[/math]

7.

What is the significance of the graph of the binding energy per nucleon vs. mass number?

- Elements with an atomic number less than 56 participate in fusion
- Elements with a mass number greater than 56 participate in fission
- Elements with a mass number less than 56 participate in fission
- Elements with an atomic number less than 56 participate in fission

8.

What is the mass defect of S-32?

- 0.00 amu
- 0.198 amu
- 0.02 amu
- 2.00 amu

9.

What is the binding energy per nucleon for S-32?

10.

The nuclear binding energy per nucleon of Ca-40 is [math]-9.33 xx 10^-13 "J"/"nucleon"[/math].

- True
- False

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