Calculate the ratio of the diffusion rates and arrange the gases in order of their speed of diffusion: HBr, Cl₂, Kr

• A. The relative rates of diffusion are Kr(1.000) > HBr(0.983) > Cl₂(0.846).
• B. The relative rates of diffusion are HBr(1.087) > Cl₂(1.018) > Kr(1.000).
• C. The relative rates of diffusion are Cl₂(1.087) > HBr(1.018) > Kr(1.000).
• D. The relative rates of diffusion are Kr(1.000) > Cl₂(0.983) > HBr(0.846).

Answer: (C)