The increasing order of entropy of state of matter is Solid < Liquid < Gas and the of the solid is C < Al < Au, and NO has higher entropy because of the greater complexity in molecule.
The entropy of a substance can be defined as the degree of randomness of the substance.
Among, solid liquid and gas,
The state of matter in increasing order of entropy are,
Solid < Liquid < Gas.
The entropy of the substance depends on the molecular mass of the substance, so, among Au, Al and C,
The increasing order of entropy is C < Al < Au.
Among NO and Ar, Complex molecule like NO has higher entropy because of the presence of more bond and more number of electrons.
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