Positive deviation from ideal behaviour takes place because of

Options

A. molecular interaction between atoms and `(PV)/(nRT) gt1` .
B. molecular interaction between atoms and `(PV)/(nRT) gt1` .
C. finite size of atoms and `(PV)/(nRT) gt1`
D. finite size of atoms and `(PV)/(nRT) gt1`

Explanation

For positive deviations `Z gt1` the condition when repulsive forces predominates Also at high `P,V` is small and b cannot be ignored but the factor `(a)/(V^(2))` can be neglected in comparison to `P` Thus `Z =1 +(Pb)/(RT)` .