1. When first discovered, a, ß, and radioactivity were referred to as a-rays, ß
ID: 2020203 • Letter: 1
Question
1. When first discovered, a, ß, and radioactivity were referred to as a-rays, ß rays and rays. Now we refer to a particles and ß particles, but still use the term rays. What type of particles are a and ß commonly known as? What type of ray is commonly known as?
2. What is the mass (calculate both in kg and unified mass units, u) of the a particle? What is the mass (calculate both in kg and unified mass units, u) of the ß particle? Which particle (a or ß) is more massive? Do all (a,ß,) carry energy? Do they all carry momentum?
Explanation / Answer
the mass of a beta particle is that of an electron which is 0.000544662309 amu (atomic mass units)
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