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.
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At a price of £340,000 it wasn't going to be anything but exclusive. Built using carbon fibre, five aluminium chassis pre-production prototypes were built, ...