Dubnium
| Formula / Notation | Db; element 105; [Rn]5f¹⁴6d³7s²; superheavy transactinide |
|---|---|
| Also Known As | Db, element 105, hahnium (historical US name), nielsbohrium (historical) |
What is Dubnium?
A synthetic radioactive transactinide element with atomic number 105 and symbol Db. It is named after Dubna, Russia, where it was first synthesized. Dubnium has no stable isotopes and its most stable known isotope has a half-life of about 28 hours.
Formula & Notation
Other Names / Synonyms: Db, element 105, hahnium (historical US name), nielsbohrium (historical)
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A synthetic radioactive transactinide element with atomic number 105 and symbol Db. It is named after Dubna, Russia, where it was first synthesized. Dubnium has no stable isotopes and its most stable known isotope has a half-life of about 28 hours.
Dubnium is produced only in microgram or submicrogram quantities by nuclear reactions in particle accelerators and has no practical applications outside of nuclear physics and the study of transactinide chemistry. Research focuses on testing whether relativistic effects alter expected group chemistr…
All isotopes of dubnium are intensely radioactive (alpha and spontaneous fission emitters) with short half-lives. Any chemical work requires hot cell facilities with remote manipulation. There are no known safe exposure levels — ALARA principles apply at all times.
The formula or notation for Dubnium is: Db; element 105; [Rn]5f¹⁴6d³7s²; superheavy transactinide