An atom has an average atomic mass of about 63.5 amu. what is the chemical symbol for the atom? consult the periodic table.
(points : 3)
pb

fe

eu

cu

An atom has an average atomic mass of about 63.5 amu. 

1 amu is equal to 1 gram per mole

so 63.5 amu is just equal to 63.5 grams per mole or 63.5 g/mol
the answer is Cu or copper.

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