Question

question 19
an atom has an average atomic mass of about 63.5 amu. what is the chemical symbol for the atom? use the periodic table.
○ pb
○ eu
○ cu
○ fe

Explanation:

By referring to the periodic - table, the element with an average atomic mass of about 63.5 amu is copper. The chemical symbol for copper is Cu. Pb is lead with an atomic mass of about 207.2 amu, Eu is europium with an atomic mass of about 151.96 amu, and Fe is iron with an atomic mass of about 55.85 amu.

Answer:

C. Cu