Unit 1.3 Nuclear Chemistry. 1.3-1 Types of Radioactivity. Learning Objectives. By the end of this section you will be able to: Observe nuclear changes and explain how they change an element. Express alpha and beta decay in nuclear equations. Model the half life of an isotope.
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1.3-1 Types of Radioactivity
Two protons and neutrons are lost
The protons and neutrons leave as an alpha particle.
Mass# is same!
(add P+) (sub e-)
Co-60 Ni-60 + Beta e- Ni-60 + gamma photon (particle of radiation)
PLEASE DO NOT WRITE THE QUESTIONS!
Each correctly answered question is worth 1 point!
Beta- a neutron becomes a proton and an electron and gives off the electron, it adds 1 to the atomic number but leaves the mass number the same so a new element is formed
Gamma- just a gamma ray, pure electromagnetic radiation (energy)
5 238 U -> 234 Th + 4 He
92 90 2