relative molecular mass

Show Summary Details

Quick Reference

Symbol Mr. The ratio of the average mass per molecule of the naturally occurring form of an element or compound to 1/12 of the mass of a carbon–12 atom. It is equal to the sum of the relative atomic masses of all the atoms that comprise a molecule.

Subjects: Chemistry.

Reference entries

See all related reference entries in Oxford Index »

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.