Table 10.3 shows that the van der Waals b parameter has units of L>mol. This implies that we can calculate the size of atoms or molecules from b. Using the value of b for Xe, calculate the radius of a Xe atom and compare it to the value found in Figure 7.6, 1.30 Å. Recall that the volume of a sphere is (4/3) πr3.

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TABLE 10.3Van der Waals Constants for Gas Molecules b (L/mol) 0.02370 0.0171 0.0322 0.0398 0.0510 0.0266 0.0391 0.0318 0.0562 0.0305 0.0428 0.0427 0.1383 Substance a(L--atm/mol 0.0341 0.211 1.34 2.32 4.19 0.244 1.39 1.36 6.49 5.46 2.25 3.59 Kr CI H2O CH4 CO2 CCl4 20.4