Template:Periodic table (electronegativity by Pauling scale)

   → Atomic radius decreases → Ionization energy increases → Electronegativity increases → See also: Electronegativities of the elements (data page) There are no reliable sources for Pm, Eu and Yb other than the range of 1.1–1.2; see Pauling, Linus (1960). The Nature of the Chemical Bond. 3rd ed., Cornell University Press, p. 93. 