Question

__________________ is the number of times one molecule of the substance is havier than 1/12 the mass of an atom of carbon \[(C^{12}\)].

• A. Relative atomic mass
• B. Relative molecular mass
• C. Gram atomic mass
• D. Gram molecular mass

Answer 1

The correct option is B Relative molecular mass

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 relative molecular mass.


RMM = $\frac{\text{M}assofonemoleculeofthesubstance}{1/12Massofoneatomofcarbon\left[C^{12}\right]}$