Question

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

Explanation:

To determine the chemical symbol, we check the average atomic mass of each element:

• Eu (Europium) has an atomic mass around 151.96 amu.
• Cu (Copper) has an average atomic mass of approximately 63.5 amu.
• Pb (Lead) has an atomic mass around 207.2 amu.
• Fe (Iron) has an atomic mass around 55.85 amu.

So the element with an average atomic mass of about 63.5 amu is Copper, with the symbol Cu.

Answer:

B. Cu