A $21.$ Based on statistical thermodynamics, which of the following statement about heat capacity is true?

$($A$)$ The $C_p$ for $Ar$ is the same as that for $Ne,$ even though the atomic weight of $Ar$ is twice that of $Ne.$

$(8)$ The heat capacity for monoatomic atom $F$ is considerably larger than that for $Ne$ even though they have about same atomic weight.

$($C$)$ The heat capacity of liquid water is much larger than that of water vapor.

$($b$)B{r}_2(g)$ has larger $C_p$ value than that of $C{l}_2(g).$

$($E$)$ The $C_p$ values for the $Ar,O_2(g),$ and $C{l}_2(g)$ are in the order of $C{l}_2(g)>O_2(g)>$ Ar$.$