D-block

f-block

• g-block
• p-block
• s-block

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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