Dubnium

Dubnium: the essentials

 Brief description: dubnium is a synthetic element that is not present in the environment at all. It has no uses.

Isolation

Isolation: only very small amounts of of element 105, dubnium, have ever been made. The first samples were made through nuclear reactions involving fusion of an isotope of californium, ²⁴⁹Cf, with one of nitrogen, ¹⁴N. A second route to the same isotope via berkelium is also known

¹⁵N + ²⁴⁹Cf → ²⁶¹₁₀₅Db + 4 ¹n

¹⁶N + ²⁴⁹Bk → ²⁶¹₁₀₅Db + 4 ¹n

Isolation of an observable quantity of dubnium has never been achieved.

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