NUCLEAR REVIEW
CE CHEMISTRY
Types of Radiation
Nuclear Symbol
235
92
U
Radioactive Nuclei
Which particle is most penetrating?
Alpha particles are the least penetrating.
Gamma rays are the most penetrating.
Radiation
• FREE RADICALS- substances missing electrons.
• Radiation sickness- can be caused by alpha particles, beta
particles or gamma rays
• rem is the biological unit of radiation for health effects of
radiation on man.
Radiation in Diagnostic Tracer
• IMPORTANT CHARACTERISITCS
• Must have a short half-life, but long enough to perform
medical tests
• Need to have a nontoxic daughter nuclei
• Give off as little radiation as possible
Radioactive Dating
• IMPORTANT CHARACTERISITCS FOR
RADIOACTIVE DATING
• Needs to have a long half-life
Nuclear Energy
• Nuclear Fission- splitting of nucleus
• Nuclear power plants
• Nuclear Fusion- putting together
• Happens in the stars and sun to make heavier
elements.
Synthetic Elements
• Technetium-97
• Promethium-143
• Astatine-210
• Francium -223
• And elements 93-118