Radioactive Decay

What causes radioactive decay?

• Ionization of an atom

• Instability in the nucleus

• Lack of energy in an atom

• Instability in the electron cloud

What is the type of radioactive decay that is occurring in the equation below?

• alpha

• beta

• gamma

• none

Complete the radioactive decay equation.

• 
• 
• 
• 

Choose the correct answer for the equation below.

• 
• 
• 
• 

How many radioactive radiation(s) does uranium-234 emit to become thorium-230?

• 1

• 2

• 3

• 4