Dubnium is a short-lived synthetic transition element used to test how periodic trends continue among very heavy atoms.
Atomic number
105
Category
Transition metal
Period
7
Group
5
State
Predicted solid
Fun facts about Dubnium
Chemical studies broadly place it with niobium and tantalum.
It is produced atom by atom in accelerator experiments.
Relativistic electron effects complicate predictions of its chemistry.
Common uses of Dubnium
Fundamental research only
Where Dubnium sits in the periodic table
Dubnium is classified as a transition metal in period 7 and group 5 of the periodic table. Under the conditions represented in this reference, its state is predicted solid.
Quick chemistry revision
For quick revision, pair the symbol Db with atomic number 105 and the listed atomic mass [268]. The summary, facts, and uses above keep those element properties together in one reference.