Lesson: Gamma Radiation

In this lesson, we will learn how to describe the process of unstable atoms decaying to a lower energy state by emitting high-energy gamma rays.

Sample Question Videos

Q1:

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

Q2:

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

Q3:

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

Q4:

The following nuclear equation shows neutron emission by helium-5:

What is the value of in the given equation?

Q5:

When an unstable nucleus emits a neutron, by how much does the charge of the nucleus change?

Q6:

When an unstable nucleus emits a neutron, by how much does the mass number of the nucleus change?

Q7:

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

Q8:

Which of the following correctly explains why free neutrons are more dangerous than alpha and beta radiation?

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