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Define radioactivity - Leaving Cert Chemistry - Question d - 2022
Question d
Define radioactivity. Copy and complete the following nuclear equation for the alpha decay of the radon-222 isotope. \(^{222}_{86}Rn \rightarrow \) \(^{214}_{84}Po... show full transcript
Worked Solution & Example Answer:Define radioactivity - Leaving Cert Chemistry - Question d - 2022
Step 1
Define radioactivity.
Answer
Radioactivity is defined as the spontaneous decay, disintegration, or splitting of an unstable atomic nucleus. This process involves the emission of one or more types of radiation, which can include alpha ((\alpha)) particles, beta ((\beta)) particles, and/or gamma ((\gamma)) rays.
Step 2
Step 3
Suggest a reason why it is not possible to change lead (Pb) atoms into gold (Au) atoms by a chemical reaction or a series of chemical reactions.
Answer
The transformation of lead (Pb) into gold (Au) involves a nuclear reaction. This means there is a change in the nucleus, which requires altering the atomic number and the number of protons. In contrast, chemical reactions involve only the rearrangement of electrons and do not change the nucleus or the atomic identity of the elements involved.