Spherically averaged electron-pair intraculeirelative motion) h(v) and extracule (center~of-mas: motion) d(p) densities in momentum space are constructed for the 49 heavy atoms Cs (atomic number2=55) through Lr(2= 103), by using the numerical Hartree-Fock method. As knownfo the 53 lighter atoms from He(2= 2) to Xe(2= 54), the electron-pair densities h(v) and d(p) ofth( heavy atoms are found to be classified into three and two types, respectively, based on thei modalities. No new types are observed even when] subshells are occupied. Subshell-pair analysi: clarifies that different modalities reflect different valence electron configurations. The:'intracule(vn; and extracule (pn) moments and the electron-electron coalescence h(o) and counterbalance d(o: densities are also obtained. The preSent resul.ts for 2= 55~ 103, together with the previou~ ones [1 Chem. Phys. 107,8510 (1997); 108,3424 (1998)] for 2=2-54, provide a compilation of accuratl Hartree-Fock values of the momentum-space electron-pair properties for the 102 neutral atoms iJ the periodic table.
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