In this worksheet, we will practice balancing equations for nuclear reactions and determining the nuclide symbols for unknown reactants and products.

**Q1: **

Write a balanced equation for the formation of dubnium-260 from californium-249 and nitrogen-15.

- A
- B
- C
- D
- E

**Q2: **

Write a balanced equation for the formation of lawrencium-257 from californium-250 and boron-11.

- A
- B
- C
- D
- E

**Q3: **

Write a balanced equation for the decay of bismuth-212 into polonium-212.

- A
- B
- C
- D
- E

**Q4: **

Write a balanced equation for the decay of an unstable atom into beryllium-8 by positron emission.

- A
- B
- C
- D
- E

**Q5: **

Write a balanced equation for the formation of plutonium-239 from uranium-238 and a neutron.

- A
- B
- C
- D
- E

**Q6: **

Write a balanced equation for the decay of strontium-90 into yttrium-90.

- A
- B
- C
- D
- E

**Q7: **

Write a balanced equation for the decay of a thorium-229 nucleus into a nucleus of actinium-225.

- A
- B
- C
- D
- E

**Q8: **

Write a balanced equation for the decay of a gold-173 nucleus into a nucleus of iridium-169.

- A
- B
- C
- D
- E

**Q9: **

Write a balanced equation for formation of berkelium-244 from americium-241 and helium-4.

- A
- B
- C
- D
- E

**Q10: **

Write a balanced equation for formation of fermium-254 from neutron bombardment of plutonium-239.

- A
- B
- C
- D
- E

**Q11: **

What is the nuclide symbol for fluorine-19?

- A
- B
- C
- D
- E

**Q12: **

What is the nuclide symbol for cobalt-60?

- A
- B
- C
- D
- E

**Q13: **

What is the nuclide symbol for rhenium-186?

- A
- B
- C
- D
- E

**Q14: **

Write a balanced equation for the production of from by particle bombardment.

- A
- B
- C
- D
- E

**Q15: **

Write a balanced equation for the production of from by neutron bombardment.

- A
- B
- C
- D
- E

**Q16: **

Write a balanced equation for the production of from by neutron bombardment.

- A
- B
- C
- D
- E

**Q17: **

Write a balanced equation for the production of from by bombardment.

- A
- B
- C
- D
- E

**Q18: **

Iodine-131 has a half-life of 8.70 days and decays by emission.

Write a balanced equation for the decay of iodine-131.

- A
- B
- C
- D
- E

How much time is needed for 95.0% of a sample of iodine-131 to decay?

**Q19: **

A nuclear reaction is described by the equation: Identify the particle .

- ASilicon-31
- BPhosphorus-31
- CSilicon-30
- DPhosphorus-30
- EAluminium-31

**Q20: **

A nuclear reaction is described by the equation: Identify the particle .

- ANitrogen-14
- BFluorine-18
- CCarbon-11
- DOxygen-17
- EBoron-12

**Q21: **

A nuclear reaction is described by the equation: Identify the particle .

- ABeryllium-7
- BLithium-7
- CBeryllium-9
- DLithium-6
- EBeryllium-10

**Q22: **

A nuclear decay is described by the equation: Identify the particle .

- A
- B
- C
- D
- E

**Q23: **

A nuclear reaction is described by the equation: Identify the particle .

- A
- B
- C
- D
- E

**Q24: **

The nuclide combines with an electron to produce a new nuclide. Write a balanced equation for this reaction.

- A
- B
- C
- D
- E

**Q25: **

Reaction of a magnesium-25 nucleus with an particle produces a free proton and another nuclide. Write a balanced equation for this reaction.

- A
- B
- C
- D
- E