# Worksheet: Nuclear Binding Energy

In this worksheet, we will practice calculating the mass defect and the nuclear binding energy for different nuclei.

**Q1: **

A helium-4 nucleus contains two protons and two neutrons. A proton has a mass of 1.00728 u and a neutron has a mass of 1.00866 u. A helium-4 nucleus has a mass of 4.00260 u. What is the difference between the mass of a helium-4 nucleus and the total mass of its nucleons? Give your answer to 6 significant figures.

- A 0.0320400 u
- B 0.0292800 u
- C 0.0265200 u
- D 1.98666 u
- E 0.979380 u

**Q2: **

is an isotope of phosphorus with an isotopic mass of 30.9738 u. Calculate the binding energy of . Give your answer to 3 significant figures.

- A J
- B J
- C J
- D J
- E J

**Q3: **

An isotope has a mass defect of 1.20 u. Calculate the isotope’s binding energy. Give your answer to 3 significant figures.

- A J
- B J
- C J
- D J
- E J

**Q4: **

A fluorine-19 nucleus contains nine protons and ten neutrons. A proton has a mass of 1.00728 u and a neutron has a mass of 1.00866 u. A fluorine-19 nucleus has a mass of 18.9984 u. What is the difference between the mass of a fluorine-19 nucleus and the total mass of its nucleons? Give your answer to 6 significant figures.

- A 1.16100 u
- B 0.139920 u
- C 0.153720 u
- D 0.166140 u
- E 0.152340 u