In the absence of an electric field, a radioactive beam strikes a fluorescent sc

Question

In the absence of an electric field, a radioactive beam strikes a fluorescent screen at a single point. When an electric field is applied, the radioactive beam is separated into three different components. One of the components is deflected toward the positive electrode because it is negatively charged, one of the components is deflected toward the negative electrode because it is positively charged, and one component is not deflected in any direction; instead, it moves along a straight path.

Identify the charges possessed by the different components of the radioactive beam by observing their behavior under the influence of an electric field.

Sort the appropriate items into Negatively Charged, Neutral, or Positively Charged:

1. ? Rays

2. ? Rays

3. ? Rays

Explanation / Answer

Beta rays (?) are negatively charged because they are electrons
Alpha rays (?) are positively charged because they are helium nuclei
Gamma rays (?) are neutral because they are just photons

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