d-block

This article is about a class of chemical elements. For the rap group, see D-Block.

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	21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn
5	39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd
6	71 Lu	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg
7	103 Lr	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Uub

References

^ ^a ^b 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

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The content of this section is licensed under the GNU Free Documentation License (local copy). It uses material from the Wikipedia article "D-block" modified November 23, 2008 with previous authors listed in its history.