Question

The relative atomic mass of an element is unitless

• A. True
• B. False

Answer 1

The correct option is A True

Relative atomic mass

• The relative atomic mass can be defined as the ratio or proportion of the average mass of atoms of an element to the 1/12th of the mass of an atom of carbon-12.
• Since it is a ratio of a physical quantity that is mass, it is a dimensionless physical quantity.

$Relativeatomicmass=\frac{averagemassofanatomofanelement}{{\displaystyle \frac{1}{12}}thofthemassofanatomofcarbon-12}$

Hence, the given statement is True. i.e, The relative atomic mass of an element is unitless.