The top journal (by impact factor) in Chemistry has an impact factor over 52 (but that’s a review journal — the top non-review journal has an impact factor of 30), the top journal in Medicine has an impact factor over 32, the top non-review journal in Mathematics has an impact factor just under 5, as does the top non-review journal in Marine and Freshwater Biology, and the top journal in Psychology and Psycholanalysis has an impact factor of just 0.8.Impact factors also change over time as different topics become “hot” and as citation practices change.In any field, an impact factor of 7.5 would be considered very respectable.
A journal with an impact factor of 7.5 can generally be considered a reputable and high-quality journal, but whether it is classified as a "top" journal depends on the specific field of study. In many disciplines, an impact factor of 7.5 is strong and indicates that the journal is influential within its area, but top-tier journals typically have impact factors that are higher, often in the range of 10 or more, especially in competitive fields like medicine, biology, or physics. However, it's important to consider other factors like the journal's reputation, editorial board, peer-review process, and relevance to your research area when determining its standing.