What Harry potter book has hermonine jealous of ron?

Hermione Granger isn't jealous of Ron Weasley in any of the Harry Potter books. While she does get frustrated with Ron's occasional clumsiness and lack of academic focus, she deeply cares for him and sees him as a close friend and confidant.

There are moments where Hermione might feel frustrated by Ron's lack of understanding of her feelings or his struggles to keep up with her intellectually. However, those instances stem from their individual personalities and are not indicative of jealousy.

Hermione's romantic interest lies with Viktor Krum in *Goblet of Fire*, but even then, it's not fueled by jealousy of Ron. It's simply a teenage crush on a handsome, famous wizard.

Perhaps you're thinking of a different character or a fan interpretation, but in the actual Harry Potter books, Hermione never exhibits jealousy towards Ron.