Isotopes of lawrencium

Isotopes of lawrencium (₁₀₃Lr)
β+	256No
β+	260No
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Lawrencium (₁₀₃Lr) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be synthesized was ²⁵⁸Lr in 1961. There are fourteen known isotopes from ²⁵¹Lr to ²⁶⁶Lr, and seven isomers. The longest-lived known isotope is ²⁶⁶Lr with a half-life of 11 hours.

^ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^ Oganessian, Yu. Ts.; Utyonkov, V. K.; Kovrizhnykh, N. D.; et al. (2022). "New isotope ²⁸⁶Mc produced in the ²⁴³Am+⁴⁸Ca reaction". Physical Review C. 106 (064306). doi:10.1103/PhysRevC.106.064306.

[NUBASE2020-1] Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.

[Mc2022-2] Oganessian, Yu. Ts.; Utyonkov, V. K.; Kovrizhnykh, N. D.; et al. (2022). "New isotope ²⁸⁶Mc produced in the ²⁴³Am+⁴⁸Ca reaction". Physical Review C. 106 (064306). doi:10.1103/PhysRevC.106.064306.

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