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Shreyasi majumdar 1 Best Answer
Correct option is b. At low temperatures (T≤ 300 (K)), the virial coefficients B (T) is negative, where the attractive part of the interaction potential so that there is a good agreement between experimental and calculated results. There is a large discrepancy at higher temperatures (T ˃ 300 (K)), the second virial coefficients B (T) is positive, and where the repulsive part of the interaction potential for molecule is dominates.