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.
... the 32,000 Russians (of whom over 22,150 were convicts) at the beginning of 20th century, the population grew to 673,100 today, 83% from whom are Russians. The larg ...