Among the following, the maximum deviation from ideal gas behavior is expected from

Step-by-step solution

The deviations from ideal gas depend on the temperature and pressure considered. NH 3 will show maximum deviation from ideal gas due more to dipole -dipole attractions i.e. presence of hydrogen bonding which leads to more attractive forces between molecules of NH 3 and therefore vander waal constants i . e .     a & b are higher consequently ammonia is the one which shows the highest deviation under the same conditions among the given options.