Atoms and molecules: Choose the correct answer — task. Science Test Space, Class 10.

are the building blocks of matter.

\(_{18}\textrm{Ar}^{40}\) and \(_{20}\textrm{Ca}^{40}\) are .

isotope is standard for determining the relative atomic mass of an element.

Did you find an error?

3. Atoms and molecules: Choose the correct answer