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Worksheet: Alpha Decay

Q1:

The following nuclear equation shows how an isotope of Neptunium decays to Protactinium: What is the value of π‘š in the equation?

Q2:

How many neutrons does an alpha particle have?

Q3:

How many protons does an alpha particle have?

Q4:

When a nucleus emits an alpha particle, by how much does the atomic number of the remaining nucleus decrease?

Q5:

When a nucleus emits an alpha particle, by how much does the mass number of the remaining nucleus decrease?

Q6:

What is the relative charge of an alpha particle?

Q7:

The following nuclear equation shows how an isotope of curium decays to plutonium via alpha decay: What are the values of 𝑝 and π‘ž in the equation?

  • A 𝑝 = 3 , π‘ž = 2
  • B 𝑝 = 4 , π‘ž = 1
  • C 𝑝 = 3 , π‘ž = 1
  • D 𝑝 = 4 , π‘ž = 2
  • E 𝑝 = 5 , π‘ž = 2

Q8:

The following nuclear equation shows how an isotope of uranium decays to thorium: What is the value of 𝑛 in the equation?