Identify the element corresponding to the electron configuration [Xe] 6s² 4f¹⁴ 5d³.

The electron configuration [Xe] 6s² 4f¹⁴ 5d³ corresponds to the element Dubnium (Db), which is located in period 7 of the periodic table. To break this down:

• The term [Xe] indicates that the configuration begins with xenon, which accounts for all the electrons up to atomic number 54.

• The 6s² indicates that there are 2 electrons in the 6s subshell.

• The 4f¹⁴ indicates that the 4f subshell is completely filled with 14 electrons.

• The 5d³ indicates that there are 3 electrons in the 5d subshell.

When looking for the element associated with this specific configuration, we add the total number of electrons. The total is 54 (from xenon) + 2 (from 6s) + 14 (from 4f) + 3 (from 5d) = 73.

The element with an atomic number of 73 is Tantalum (Ta). Therefore, the electron configuration [Xe] 6s² 4f¹⁴ 5d³ corresponds correctly to Tantalum.