What is relative molecular mass and relative atomic mass? [2 MARKS]

Each point: 1 Mark

1. The ratio of the average mass of one molecule of an element or compound to one twelfth of the mass of an atom of carbon-12 is called the relative molecular mass.

2. Relative atomic mass of the atom of an element is defined as the average mass of the atom, as compared to $[\frac{1}{12}{]}^{th}$ the mass of one carbon-12 atom.