C-02-Q084mediumsingle_mcqAmong HX2,He,NX2,OX2,COX2\ce{H2, He, N2, O2, CO2}HX2,He,NX2,OX2,COX2, which has the slowest diffusion rate?aHX2\ce{H2}HX2bHe\ce{He}HecOX2\ce{O2}OX2dCOX2\ce{CO2}COX2