Worksheet: Gamma Radiation

In this worksheet, we will practice describing the process of unstable atoms decaying to a lower energy state by emitting high-energy gamma rays.

Q1:

When an atomic nucleus emits a gamma ray, by how much does the charge of the nucleus change?

Q2:

When an atomic nucleus emits a gamma ray, by how much does the mass number of the nucleus change?

Q3:

When an atomic nucleus emits a gamma ray, by how much does the atomic number of the nucleus change?

Q4:

Which of the following is the correct symbol for a gamma ray?

  • A Ψ
  • B 𝜁
  • C 𝑦
  • D 𝛾
  • E 𝜉

Q5:

The following nuclear equation shows gamma emission by radon.

2 2 2 8 6 2 2 2 8 6 R n X + 𝛾

What is the name of element X?

  • ARadium
  • BPolonium
  • CFrancium
  • DRadon
  • EAstatine

What element symbol should replace X?

  • ARa
  • BRn
  • CRd
  • DRo
  • ERh

Q6:

The following nuclear equation shows gamma emission by cobalt.

6 0 2 7 2 7 C o C o + 𝛾

What is the value of 𝑝 in the equation?

Q7:

Which of the following nuclear equations correctly shows gamma emission by iridium?

  • A 1 9 2 7 7 1 9 3 7 7 I r I r + 𝛾
  • B 1 9 2 7 7 1 9 3 7 8 I r I r + 𝛾
  • C 1 9 2 7 7 1 9 2 7 7 I r I r + 𝛾
  • D 1 9 2 7 7 1 9 1 7 6 I r I r + 𝛾
  • E 1 9 2 7 7 1 9 1 7 7 I r I r + 𝛾

Q8:

What type of particle is a gamma ray the same as?

  • AAn electron
  • BA positron
  • CA neutron
  • DA photon
  • EA proton

Q9:

The figure shows a section of the periodic table. If an atom of an isotope of iridium undergoes gamma emission, which of the elements shown in the figure will the atom become afterward?

  • APlatinum
  • BOsmium
  • CIridium
  • DGold
  • ERhenium

Q10:

The given nuclear equation shows gamma emission by barium.

1 3 7 5 6 B a B a + 𝛾

What is the value of 𝑚 in the previous equation?

What is the value of 𝑛 in the previous equation?

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