Which of the following has the largest number of atoms? 1)0.5 g atom of cu 2)0.635 g cu 3)0.25 moles cu atom 4)1 g cu please give the ans with STEPS !!

Which of the following has the largest number of atoms? 1)0.5 g atom

1.	Which of the following has the largest number of atoms? 1)0.5 g atom of cu 2)0.635 g cu 3)0.25 moles cu atom 4)1 g cu please give the ans with STEPS !!
Answer» D