Carbon-14 () is a radioactive isotope used in archaeology. What is the fundamental reason for its in — Nuclear Chemistry and Radioactivity Chemistry Question
Question
Carbon-14 (${}_{6}^{14}C$) is a radioactive isotope used in archaeology. What is the fundamental reason for its instability, and what is its mode of decay?
Answer: A
💡 Solution & Explanation
${}_{6}^{14}C$ has 6 protons and 8 neutrons, giving an $n/p$ ratio of $1.33$, which is above the stability belt for light elements. It stabilizes by converting a neutron to a proton via $\beta^-$ emission (${}_{0}^{1}n \rightarrow {}_{1}^{1}p + {}_{-1}^{0}e$), forming stable ${}_{7}^{14}N$ ($n/p=1$).
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