Question

We use an atom of _______ as the standard particle for comparing the masses of atoms of other elements.

Answer 1

Standard Particle

• Each element has a distinct atomic mass. Atoms are extremely small particles, and determining their exact masses is extremely difficult.
• The International Union of Chemists adopted carbon -$12$ as the standard for comparing the atomic and molecular masses of elements and compounds.
• The atomic mass of the standard, the carbon-$12$ isotope, is chosen to be$12$.
• Thus, atomic mass can be defined as the relative mass of an element's atom compared to a carbon atom (carbon-$12$) taken as $12$.

Therefore, We use an atom of carbon as the standard particle for comparing the masses of atoms of other elements.