carbon133
Carbon133 is a hypothetical isotope of carbon. Naturally occurring carbon is primarily composed of two stable isotopes: carbon-12 (¹²C) and carbon-13 (¹³C). Carbon-14 (¹⁴C) is a radioactive isotope used in radiocarbon dating. Carbon-133 would have a nucleus containing 6 protons (the defining characteristic of carbon) and 127 neutrons. The total number of nucleons would be 133. The existence of such a neutron-rich isotope of carbon is highly improbable under normal astrophysical conditions. The current known isotopes of carbon range from ¹⁰C to ²³C, with most existing only for very brief periods as highly unstable, artificially produced nuclei. The precise atomic mass of carbon-133 would be approximately 133 atomic mass units, with the exact value determined by nuclear binding energies. If synthesized, carbon-133 would likely be extremely unstable, decaying rapidly through neutron emission or beta decay into other isotopes. Its neutron-to-proton ratio would be significantly higher than that of stable carbon isotopes, contributing to its predicted instability. There is no experimental evidence for the existence or synthesis of carbon-133 in any laboratory setting.