Section outline

  • Radioactivity is the spontaneous emission of radiation from the unstable nucleus of an atom as it changes into a more stable form.

    The main types of radioactive radiation are:

    1. Alpha (α) radiation – consists of helium nuclei and has low penetrating power.
    2. Beta (β) radiation – consists of high-speed electrons or positrons and has moderate penetrating power.
    3. Gamma (γ) radiation – consists of high-energy electromagnetic waves and has very high penetrating power.

    Radioactivity occurs naturally in elements such as uranium, radium, and thorium, and it also has important applications in medicine, agriculture, industry, and scientific research.

    • The Ultimate Chemistry Trap Quiz
    • RADIOACTIVITY Page

      Radioactivity is the spontaneous emission of radiation from the unstable nucleus of an atom as it changes into a more stable form.

      The main types of radioactive radiation are:

      1. Alpha (α) radiation – consists of helium nuclei and has low penetrating power.
      2. Beta (β) radiation – consists of high-speed electrons or positrons and has moderate penetrating power.
      3. Gamma (γ) radiation – consists of high-energy electromagnetic waves and has very high penetrating power.

      Radioactivity occurs naturally in elements such as uranium, radium, and thorium, and it also has important applications in medicine, agriculture, industry, and scientific research.