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:

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

ANeutrons are uncharged, and so can travel through substances more easily than alpha and beta particles.
BFree neutrons rapidly decay into several highly ionizing particles.
CNeutrons are heavier than either alpha particles or beta particles, and so are not deflected as easily.
DNeutrons have a greater electric charge than either alpha particles or beta particles, so are more ionizing.

Q2:

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

What is the value of in the given equation?

Q3:

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

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