Question

11. Write each step of uranium-240 undergoing first an alpha decay then two rounds of beta decay.

Answer 1

lanation:    

ExpErnest Rutherford’s experiments involving the interaction of radiation with a magnetic or electric field (Figure 2) helped him determine that one type of radiation consisted of positively charged and relatively massive α particles; a second type was made up of negatively charged and much less massive β particles; and a third was uncharged electromagnetic waves, γ rays. We now know that α particles are high-energy helium nuclei, β particles are high-energy electrons, and γ radiation compose high-energy electromagnetic radiation. We classify different types of radioactive decay by the radiation produced.

Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:

210

84

Po

⟶

4

2

He

+

206

82

Pb

or

210

84

Po

⟶

4

2

α

+

206

82

Pb