text: The image shows a periodic table extract with the electronegativity values of metals.
  Wulfsberg distinguishes:<br>  very electropositive metals with electronegativity values below 1.4<br>
   electropositive metals with values between 1.4 and 1.9; and<br>
   electronegative metals with values between 1.9 and 2.54.
  From the image, the group 1–2 metals and the lanthanides and actinides are very electropositive to electropositive; the transition metals in groups 3 to 12 are very electropositive to electronegative; and the post-transition metals are electropositive to electronegative. The noble metals, inside the dashed border (as a subset of the transition metals) are very electronegative.