D-block
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Elemental Groups

d-block f-block g-block p-block s-block Subgroups

D-block (for diffuse) elements consist of the transition metals (group 3-12 on the periodic table) in which the outermost electron shell is the D orbital. D-block elements form at least one stable ion with an incompletely filled electron subshell.

See also:

• 25-block

The original article can be found at: http://en.wikipedia.org/wiki/D-block.
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