Worksheet: Neutron Emission

In this worksheet, we will practice how to describe the process of unstable atoms decaying to a lower energy state by emitting neutrons.

Q1:

Beryllium-15 is an isotope of beryllium that is highly unstable. It does not occur naturally, but it can be created synthetically. Beryllium-15 decays via neutron emission. This is shown in the graph.

What isotope does beryllium-15 decay to?

  • ABoron-14
  • BBeryllium-13
  • CBeryllium-14
  • DBeryllium-16
  • EBoron-15

Q2:

Which of the following nuclear equations correctly shows beryllium-13 undergoing neutron emission?

  • A 1 3 4 1 2 4 B e B e + n
  • B 1 3 4 1 1 4 B e B e + n
  • C 1 3 4 1 2 3 B e B e + n + e
  • D 1 3 4 1 3 4 B e B e + n
  • E 1 3 4 1 2 3 B e B e + n

Q3:

Which of the following symbols represents a neutron?

  • Av
  • Bn
  • C 𝜂
  • D 𝜇
  • E 𝜈

Q4:

The following nuclear equation shows neutron emission by boron-18.

1 8 5 1 7 5 B X + n

What is the name of element X?

  • ABeryllium
  • BNitrogen
  • CBoron
  • DLithium
  • ECarbon

What element symbol should replace X?

  • AB
  • BBe
  • CBr
  • DBa
  • EBh

Q5:

The following nuclear equation shows neutron emission by lithium-12.

What is the value of 𝑝 in the equation?

Q6:

The diagram shows a nucleus undergoing neutron emission. Red circles represent protons and grey circles represent neutrons.

What isotope is shown in the diagram before the reaction takes place?

  • ABoron-17
  • BBoron-16
  • CBoron-15
  • DBoron-18

What isotope is produced through this decay?

  • ABoron-16
  • BBoron-14
  • CBoron-15
  • DBoron-17

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