Answer
$Ga(l)$
Work Step by Step
Entropies for liquids are much greater than those of solids. Therefore, the larger standard molar entropy is for $Ga(l)$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.