The Table below lists the constants a, b and d for interactions between noble gas pairs: (remember 1 pm = 1 x 10-12 metres)

Atom a/pm-1 b/kJ mol-1 d/kJ mol-1 pm6
He 0.0397 17 x 103 138 x 1012
Ne 0.0461 438 x 103 524 x 1012
Ar 0.0369 918 x 103 5935 x 1012
Kr 0.0304 273 x 103 11521 x 1012
Xe 0.0293 719 x 103 27663 x 1012


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