Health Dictionary

Template:Otheruses4 The d-block of the periodic table of the elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d-orbital. The d-block elements are often also known as transition metals.

Although Lutetium and Lawrencium are in the d-block, they are not considered transition metals but lanthanide and actinide according to IUPAC.^[1] Group 12 elements are also in the d-block but are considered post-transition metals^[2] if their d-subshell is completely filled.^[1]

**Chemical elements in d-block**
Group →	3	4	5	6	7	8	9	10	11	12
↓ Period
4	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell
5	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell
6	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell
7	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell	Template:Element cell

References

↑ ^1.0 ^1.1 IUPAC Provisional Recommendations for the Nomenclature of Inorganic Chemistry (2004) (online draft of an updated version of the “Red Book” IR 3-6)
↑ “Post Transition Metal Chemistry Lecture 1” WebLearn – Oxford Campus, Department of Chemistry, public anonymous access, Michaelmas Term 2007, Prof. R.G. Egdell, Accessed December 2, 2007