... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > alkali metal molecular entity > alkali metal salt > potassium salt > potassium chromate

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > salt > alkali metal salt > potassium salt > potassium chromate

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > alkali metal molecular entity > potassium molecular entity > potassium salt > potassium chromate