• radiation = substance emits radioactive particles or waves

Types of Radiation:

1) Alpha (a) particle – high energy helium nucleus 42He

2) Beta (b) particle – high energy electron

no > p+ + e

3) Gamma (g) waves – electromagnetic photons

A Closer Look at Light

Natural Transmutations

  • Radioactive decay = change in nucleus that produces radiation
  • Transmutation = change one element into a different element
    • Alpha decay:  ex.   21286Rn > 20884Po + 42He
    • Beta decay:    ex.   146C > 147N + e

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